Unable to run app on Android emulator if platform-tools and tools are not added to PATH

[vchimev]

Tested against the release branch for 1.5 - ping @rosen-vladimirov.

Output:

VCHIMEVMAC:nativescript-cli-tests vchimev$ echo $ANDROID_HOME
/Users/vchimev/Library/Android/sdk
VCHIMEVMAC:nativescript-cli-tests vchimev$ echo $PATH
/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/Library/Java/JavaVirtualMachines/jdk1.8.0_60.jdk/Contents/Home/bin:/Work/Maven/bin
VCHIMEVMAC:nativescript-cli-tests vchimev$ node_modules/.bin/tns run android --emulator --path TNS_App --log trace
execFile: /Users/vchimev/Library/Android/sdk/platform-tools/adb "help"
spawn: /Users/vchimev/Library/Android/sdk/tools/android "--help"

       Usage:
       android [global options] action [action options]
       Global options:
  -s --silent     : Silent mode, shows errors only.
  -v --verbose    : Verbose mode, shows errors, warnings and all messages.
     --clear-cache: Clear the SDK Manager repository manifest cache.
  -h --help       : Help on a specific command.

                                                                    Valid
                                                                    actions
                                                                    are
                                                                    composed
                                                                    of a verb
                                                                    and an
                                                                    optional
                                                                    direct
                                                                    object:
-    sdk              : Displays the SDK Manager window.
-    avd              : Displays the AVD Manager window.
-   list              : Lists existing targets or virtual devices.
-   list avd          : Lists existing Android Virtual Devices.
-   list target       : Lists existing targets.
-   list device       : Lists existing devices.
-   list sdk          : Lists remote SDK repository.
- create avd          : Creates a new Android Virtual Device.
-   move avd          : Moves or renames an Android Virtual Device.
- delete avd          : Deletes an Android Virtual Device.
- update avd          : Updates an Android Virtual Device to match the folders
                        of a new SDK.
- create project      : Creates a new Android project.
- update project      : Updates an Android project (must already have an
                        AndroidManifest.xml).
- create test-project : Creates a new Android project for a test package.
- update test-project : Updates the Android project for a test package (must
                        already have an AndroidManifest.xml).
- create lib-project  : Creates a new Android library project.
- update lib-project  : Updates an Android library project (must already have
                        an AndroidManifest.xml).
- create uitest-project: Creates a new UI test project.
- update adb          : Updates adb to support the USB devices declared in the
                        SDK add-ons.
- update sdk          : Updates the SDK by suggesting new platforms to install
                        if available.

Exec uname -a 
 stdout: Darwin VCHIMEVMAC.local 14.5.0 Darwin Kernel Version 14.5.0: Wed Jul 29 02:26:53 PDT 2015; root:xnu-2782.40.9~1/RELEASE_X86_64 x86_64

 stderr: 
Exec npm -v 
 stdout: 3.3.9

 stderr: 
spawn: java "-version"
Exec node-gyp -v 
 stdout:  
 stderr: /bin/sh: node-gyp: command not found

Exec xcodebuild -version 
 stdout: Xcode 7.1
Build version 7B91b

 stderr: 
Exec pod --version 
 stdout: 0.39.0

 stderr: 
Exec '/Users/vchimev/Library/Android/sdk/platform-tools/adb' version 
 stdout: Android Debug Bridge version 1.0.32
Revision 57224c5cff69-android

 stderr: 
spawn: /Users/vchimev/Library/Android/sdk/tools/android "-h"
Exec mono --version 
 stdout:  
 stderr: /bin/sh: mono: command not found

Exec git --version 
 stdout: git version 2.4.9 (Apple Git-60)

 stderr: 
Exec gradle -v 
 stdout:  
 stderr: /bin/sh: gradle: command not found

Exec "/Library/Java/JavaVirtualMachines/jdk1.8.0_60.jdk/Contents/Home/bin/javac" -version 
 stdout:  
 stderr: javac 1.8.0_60

System information:
{ procInfo: 'nativescript/1.5.0',
  platform: 'darwin',
  os: 'Darwin VCHIMEVMAC.local 14.5.0 Darwin Kernel Version 14.5.0: Wed Jul 29 02:26:53 PDT 2015; root:xnu-2782.40.9~1/RELEASE_X86_64 x86_64\n',
  shell: '/bin/bash',
  dotNetVer: null,
  procArch: 'x64',
  nodeVer: 'v4.2.1',
  npmVer: '3.3.9',
  javaVer: '1.8.0',
  nodeGypVer: null,
  xcodeVer: 'Xcode 7.1\nBuild version 7B91b\n',
  itunesInstalled: true,
  cocoapodVer: '0.39.0\n',
  adbVer: 'Android Debug Bridge version 1.0.32',
  androidInstalled: true,
  monoVer: null,
  gitVer: '2.4.9 (Apple Git-60)',
  gradleVer: null,
  javacVersion: '1.8.0_60' }
Initializing analytics statuses.
Analytics statuses: 
{ TrackFeatureUsage: 0, TrackExceptions: 1 }
Trying to track feature 'CLI' with value 'run'.
AnalyticsInstallationID: 04f8d0fe-f85b-4b97-a0c4-540181d9dbb3
monitor not started
monitor not started
monitor has started, connecting to http://5752dabccfc54c4ab82aea9626b7338e.monitor-eqatec.com/json.ashx
execFile: /Users/vchimev/Library/Android/sdk/platform-tools/adb "help"
spawn: /Users/vchimev/Library/Android/sdk/platform-tools/adb "start-server"
Looking for project in '/Work/GitHub/nativescript-cli-tests/TNS_App'
Project directory is '/Work/GitHub/nativescript-cli-tests/TNS_App'.
Analytics statuses: 
{ TrackFeatureUsage: 0, TrackExceptions: 1 }
Trying to track feature 'CLI' with value 'run|android'.
Statistics was sent successfully (xhr).
spawn: emulator "-help"
execFile: /Users/vchimev/Library/Android/sdk/platform-tools/adb "devices"
Starting Android emulator with image Api23
spawn: emulator "-avd" "Api23"
execFile: /Users/vchimev/Library/Android/sdk/platform-tools/adb "devices"
Error: spawn emulator ENOENT
    at exports._errnoException (util.js:874:11)
    at Process.ChildProcess._handle.onexit (internal/child_process.js:178:32)
    at onErrorNT (internal/child_process.js:344:16)
    at doNTCallback2 (node.js:439:9)
    at process._tickCallback (node.js:353:17)
VCHIMEVMAC:nativescript-cli-tests vchimev$