Merge pull request #7 from suchintan/backend

Merged shit yo dawg
Implemented connection between GameState and LetterGetterActivity.
Test commit
Removed search box. Implemented difficulty and leaderboard view with
listview.
Added TrayActivity and functionality
Merge branch 'master' of https://github.com/suchintan/LetterGetter.git
Implemented Shop items
Merge pull request #8 from suchintan/Hazikbranch

Hazikbranch
GameState holds the quantity of letters present in the Tray. 

The Tray is now called everytime a letter has to be inputted on the
LetterGetterActivity. However due to some unforeseen flow of events due
to the difficulty buttons, the input gets refreshed.
LetterGetterActivity has to be changed, so that it follows the game
logic more closely.
Implemented Shop items
GameState holds the quantity of letters present in the Tray. 

The Tray is now called everytime a letter has to be inputted on the
LetterGetterActivity. However due to some unforeseen flow of events due
to the difficulty buttons, the input gets refreshed.
LetterGetterActivity has to be changed, so that it follows the game
logic more closely.
Fixed a merge issue
GameState holds the quantity of letters present in the Tray. 

The Tray is now called everytime a letter has to be inputted on the
LetterGetterActivity. However due to some unforeseen flow of events due
to the difficulty buttons, the input gets refreshed.
LetterGetterActivity has to be changed, so that it follows the game
logic more closely.
This is annoying, more merge problems
Fixed merge problems
Checks put in place to better manage Game logic
Added trie