Merge pull request #7 from adjust/development

Development
Update readme with execution permissions
Rephrase readme execution permissions
Merge pull request #10 from adjust/readme_permissions

Update readme with execution permissions
Accept target platform keys in config file
Update Readme with platform configuration
New version 3.4.1
Add iOs frameworks
Merge pull request #13 from adjust/dual_config

Dual config
Add google play services plugin as a dependency (see https://github.com/MobileChromeApps/google-play-services)