Added 'expect' to fix fulfill dependency on verion-2 of android-sdk-installer

.travis.yml

@@ -3,7 +3,7 @@ jdk: oraclejdk7
 before_install:
   # Install base Android SDK
     - sudo apt-get update -qq
-    - sudo apt-get install -qq libstdc++6:i386 lib32z1
+    - sudo apt-get install -qq libstdc++6:i386 lib32z1 expect
     - export COMPONENTS=build-tools-18.1.0,android-14,android-17,android-19,sysimg-19,extra-android-support
     - curl -3L https://raw.github.com/embarkmobile/android-sdk-installer/version-2/android-sdk-installer | bash /dev/stdin --install=$COMPONENTS
     - source ~/.android-sdk-installer/env