++RAC
++RAC to v2.2.4
++RAC for +rac_sendAsynchronousRequest: fix
++RAC for xcconfigs bump
++Archimedes for xcconfigs bump
Merge pull request #98 from ReactiveCocoa/xcconfigs-bump

Bump RAC and Archimedes for xcconfigs updates.
Add a workspace with flattened dependencies.
Pull dependencies from the workspace.
Scheme version bump.
Bump RAC.
Use the test configuration when testing.
Bump dependencies.
Bump dependencies.
Document the workspace/xcodeproj divide.
Bump RAC.
Bump RAC.
Clean up search paths.
Clean up product paths.
Merge pull request #99 from ReactiveCocoa/flatten-dependencies

Flatten dependencies
Update RAC for header inclusion paths.