Add Coveralls configuration
Use travis-ci after_script for test coverage
Fix 'piping from a file' test
Wrap the whole test in if/else statement instead of
using process.exit on Travis-CI
Clear stderr array before each test in node-debug
Merge branch 'master' into test-coverage

Conflicts:
	.gitignore
Merge pull request #1277 from simov/test-coverage

Add Coveralls configuration