bumped version to 0.9.167.pre1 and added change log
bumped run_loop to dependency to 0.1.3
fixes keyboard_enter_char 'Return'

https://github.com/calabash/calabash-ios/issues/309
updated change log with status of issue 309
Merge pull request #311 from jmoody/fix/0.9.x-return-key

fixes keyboard_enter_char 'Return' issue 291
made a todo to update the scroll_to_cell function argument list for version 1.0 API
updated .gitignore with common ruby ignores including rbenv convention .ruby-version
added function to core.rb to support scrolling to collection view items by item and section
bumped the gem version to 0.9.167.pre2 and the framework version to 0.9.167
updated 0.9.167 changelog with details about collection view scrolling
Merge pull request #312 from jmoody/feat/0.9.x-collection-view-scrolling

adds client support for scrolling to item/section in UICollectionViews
Added wait helpers.
Clarified wait helper arguments.
Replaced element with uiquery.
Added documentation on new wait helpers.
Fixed branch changes.