chmod on all scripts to test permissions on travis build

Author: mediumTaj

.travis.yml

@@ -2,8 +2,15 @@ language: objective-c
 osx_image: xcode61
 rvm:
 - 2.1.2
+before_install:
+- chmod a+x ./Travis/installUnity.sh
 install:
 - ./Travis/installUnity.sh
+before_script:
+- chmod a+x ./Travis/createProject.sh
+- chmod a+x ./Travis/installSDK.sh
+- chmod a+x ./Travis/runTests.sh
+- chmod a+x ./Travis/build.sh
 script:
 - ./Travis/createProject.sh
 - ./Travis/installSDK.sh