Add fabric keys and signing keystore for Travis to use

.travis.yml

-# http://docs.travis-ci.com/user/languages/android/
 language: android
 jdk: oraclejdk8
 sudo: false
-
 before_cache:
-  - rm -f  $HOME/.gradle/caches/modules-2/modules-2.lock
-  - rm -fr $HOME/.gradle/caches/*/plugin-resolution/
-
+- rm -f  $HOME/.gradle/caches/modules-2/modules-2.lock
+- rm -fr $HOME/.gradle/caches/*/plugin-resolution/
 cache:
   directories:
-    - $HOME/.gradle/caches/
-    - $HOME/.gradle/wrapper/
-    - $HOME/.android/build-cache
-
+  - $HOME/.gradle/caches/
+  - $HOME/.gradle/wrapper/
+  - $HOME/.android/build-cache
 env:
   global:
-    - EMULATOR_API_LEVEL=14
-    - ANDROID_API_LEVEL=25
-    - ANDROID_BUILD_TOOLS_VERSION=25.0.2
-    - ANDROID_ABI=armeabi-v7a
-    - ADB_INSTALL_TIMEOUT=5 # minutes
-
+  - EMULATOR_API_LEVEL=14
+  - ANDROID_API_LEVEL=25
+  - ANDROID_BUILD_TOOLS_VERSION=25.0.2
+  - ANDROID_ABI=armeabi-v7a
+  - ADB_INSTALL_TIMEOUT=5
 android:
   components:
-    # to install Android SDK tools 25.1.x
-    - tools
-    - platform-tools
-    - tools
-
-    # Build tools
-    - build-tools-$ANDROID_BUILD_TOOLS_VERSION
-
-    # SDK Versions
-    - android-$EMULATOR_API_LEVEL
-    - android-$ANDROID_API_LEVEL
-
-    # Support library
-    - extra-android-support
-
-    # Latest artifacts in local repository
-    - extra-android-m2repository
-
-    # Emulator images
-    - sys-img-$ANDROID_ABI-android-$ANDROID_API_LEVEL
-    - sys-img-$ANDROID_ABI-android-$EMULATOR_API_LEVEL
-
-
+  - tools
+  - platform-tools
+  - tools
+  - build-tools-$ANDROID_BUILD_TOOLS_VERSION
+  - android-$EMULATOR_API_LEVEL
+  - android-$ANDROID_API_LEVEL
+  - extra-android-support
+  - extra-android-m2repository
+  - sys-img-$ANDROID_ABI-android-$ANDROID_API_LEVEL
+  - sys-img-$ANDROID_ABI-android-$EMULATOR_API_LEVEL
   licenses:
-    - android-sdk-license-.+
-    - android-sdk-preview-license-.+
-
-
+  - android-sdk-license-.+
+  - android-sdk-preview-license-.+
 before_script:
-  # Create and start emulator
-  - android list target
-  - android list targets
-  - echo no | android create avd --force -n test -t android-14 --abi armeabi-v7a
-  - emulator -avd test -no-skin -no-audio -no-window &
-  - android-wait-for-emulator
-  - adb shell input keyevent 82 &
-
+- echo no | android create avd --force -n test -t android-14 --abi armeabi-v7a
+- emulator -avd test -no-skin -no-audio -no-window &
+- android-wait-for-emulator
+- adb shell input keyevent 82 &
 script:
-  - "./gradlew clean build connectedCheck -PdisablePreDex --stacktrace"
-
+- ./gradlew clean build connectedCheck -PdisablePreDex --stacktrace
 notifications:
   webhooks:
     urls:
-      - https://webhooks.gitter.im/e/0283e844d525908106b2
-    on_success: change  # options: [always|never|change] default: always
-    on_failure: always  # options: [always|never|change] default: always
-    on_start: false     # default: false
+    - https://webhooks.gitter.im/e/0283e844d525908106b2
+    on_success: change
+    on_failure: always
+    on_start: false
+before_install:
+- openssl aes-256-cbc -K $encrypted_c75769befc95_key -iv $encrypted_c75769befc95_iv
+  -in keystore.jks.enc -out keystore.jks -d
+- openssl aes-256-cbc -K $encrypted_c75769befc95_key -iv $encrypted_c75769befc95_iv
+  -in fabric.properties.enc -out app/fabric.properties -d