some date picker tests
numerous changes

* removed the min/max dates on the date picker
* added cucumber.yml file to control how cucumber runs and removed the
  RubyMine specific configuration of environmental variables. should
  improve the command line experience.  screenshots are now saved to
  cucumber-screenshots directory. now generating rerun.txt file.
* gemfile now points to briar 0.0.6 instead of the github page - use
  bundler to control local/remote gem
* removed the irb_ios4 script - will not support iOS 4
* changed RubyMine project name to briar-ios-example
updated calabash framework and trying to fix Xcode+git+MacOS case-insensitive os bullshit
fixes problem with case-insensitive xib names - sheesh
fixing tab bar tests. new irbrc file.  changing up the RM run configurations.  gemfile now points to local gem
trying hard to get the bundle + local gem + github to work correctly in rubymine