Merge pull request #128 from NativeScript/zbranzov/fix-build

fix: android build job

Author: Zdravko

.travis.yml

@@ -29,7 +29,7 @@ matrix:
         - BuildAndroid="26"
       language: android
       jdk: oraclejdk8
-      before_install: nvm install stable
+      before_install: nvm install 8.9.4
       script:
         - cd src && npm i && npm run tsc && cd ../demo && tns build android
     - os: osx
@@ -73,7 +73,7 @@ android:
     - tools
     - tools
     - platform-tools
-    - build-tools-26.0.1
+    - build-tools-26.0.2
     - android-26
     - android-23
     - extra-android-m2repository