Create the directory at screenshotsURL before trying to save the image to it.
Log errors if writing a screenshot fails.
Refs #8.
Merge pull request #9 from usepropeller/does_exit

Add KSScreenshotManager#exitOnComplete
add instructions for cocoapod

taking from KIF: https://github.com/kif-framework/KIF/#installation-with-cocoapods
Merge branch 'cocoapod' into propeller
add attribution and license file
change from commit to  a tag
Merge pull request #10 from usepropeller/cocoapod

Add a Cocoapod
Replacing WaxSim references with ios-sim.
Merge branch 'master' into propeller
add #logginEnabled
Merge branch 'logging_enabled' into propeller