Basic ImageResult model to store result information
Enhance ImageResult class to initialize an ImageResult ArrayList
Add android smart image view library
Add search feature using Google Image Search API

- User can enter a search query that will display a grid of image results from the Google Image API.
- Fixes #1
Add full-screen image view

- User can tap on any image in results to see the image full-screen
- ImageResult is now Serializable
- Fixes #5