Update gitignore
Add initial XCSchemeTask that generates build and test tasks
Replace incorrect "-xcodeproj" option with "-project"

xcodeproj= is now an alias for project=.
Add script for running tests whenever something is written to a named pipe
Allow custom task names
XcodebuildTask initializer sets build action instead of task name
Update XCSchemeTask#initialize to accept scheme name
Move *_task files into rake/ namespace from rake/xcodebuild/
Fix bug causing tests not to be namespaced properly
First pass at generating descriptions for tasks