add check for completed line function

-evaluates row and column for presence of "0"
-calls zero row to be defined
resolve conflicts, merge master
Merge pull request #10 from jpberry0623/check_complete_lines

Check complete lines
merging
merge conflicts
Merge pull request #11 from alanflorendo/block_movement

Block movement
Merge branch 'master' of https://github.com/woolly-bear-caterpillars-2014/Tetroggleable

Conflicts:
	tetroggleable/app/assets/javascripts/game.js
Merge branch 'master' of https://github.com/woolly-bear-caterpillars-2014/Tetroggleable

Conflicts:
	tetroggleable/app/assets/javascripts/game.js
Add clearCompletedRow function

-when completed row is removed the rows above will shift down until landed
-made small tweaks to increase readability and code cleaniliness