chore(build): Adding missing build entries

Author: hypery2k

.travis.yml

@@ -33,6 +33,7 @@ matrix:
         - npm run ngc
         - cd ..
       script: 
+        - tns build ios
         - cd tests
         - npm install
     - language: android
@@ -51,6 +52,7 @@ matrix:
         - android-wait-for-emulator
         - adb shell input keyevent 82 &
       script: 
+        - tns build android
         - cd tests
         - npm install