added poc basic appium tests

[twnolan]

Basic POC test for how appium can handle switching from a native app to a browser and back again

• added basic working tests
• Now two tests, one using webdriverio waits, the other implemnted with chai-as-promised transferPromisness for comparrison
• Added page object variable to reduce repetition, separate presentation and test logic and eliminate errors in of writing long xpath selectors

To Run the tests

1. Start the Android Emulator
2. Edit /data/config.json to include correct details for "USER" and "ANDROID_DETAILS" sections (Android details are the details of your android emulator)
3. npm install
4. npm run start-appium-server
5. npm test