Gitignore updated with generated coverage folder.
Gitignore updated with generated coverage folder.

hauledev/bookyt,huerlisi/bookyt,hauledev/bookyt,wtag/bookyt,gaapt/bookyt,gaapt/bookyt,silvermind/bookyt,hauledev/bookyt,silvermind/bookyt,huerlisi/bookyt,xuewenfei/bookyt,silvermind/bookyt,xuewenfei/bookyt,silvermind/bookyt,gaapt/bookyt,huerlisi/bookyt,hauledev/bookyt,gaapt/bookyt,wtag/bookyt,xuewenfei/bookyt,wtag/bookyt