[travis] Update build scripts for Xcode 6.1.
[travis] Drop iOS 8.0 tests.
ASImageNodeRoundBorderModificationBlock().
ASNetworkImageNode ARC fixes.
Missed a spot!
[travis] Only run tests on master; ./build.sh.

Don't consider the build broken if a feature branch is broken.

Move the actual build command to a separate script -- easier to read,
easier to maintain, and easier to run by hand.
Support custom working-range logic.
Merge pull request #118 from nguyenhuy/custom_working_range_calculation

Support custom working-range logic for ASRangeController
Manually display nodes

Added a sample project that will demonstrate how to manually display nodes. Removed the UIWindow hack that coupled display of nodes with Core Animation transactions.