Updating travis to fix CI issues

Author: infil00p

.travis.yml

@@ -41,27 +41,35 @@ matrix:
     android:
       components:
       - tools
+      - platform-tools
+      - tools
   - env: PLATFORM=android-5.1
     os: linux
     language: android
     jdk: oraclejdk8
     android:
       components:
       - tools
+      - platform-tools
+      - tools
   - env: PLATFORM=android-6.0
     os: linux
     language: android
     jdk: oraclejdk8
     android:
       components:
       - tools
+      - platform-tools
+      - tools
   - env: PLATFORM=android-7.0
     os: linux
     language: android
     jdk: oraclejdk8
     android:
       components:
       - tools
+      - platform-tools
+      - tools
 before_install:
 - rm -rf ~/.nvm && git clone https://github.com/creationix/nvm.git ~/.nvm && (cd ~/.nvm
   && git checkout `git describe --abbrev=0 --tags`) && source ~/.nvm/nvm.sh && nvm