add code coverage utils to devDependencies: jscoverage, nodeunit, coveralls
make tests toggle between coverage-instrumented code based on BOOTLINT_COV env var
ignore in-browser-only and safeguards-against-bootlint-bugs code sections for coverage measurement purposes
Add coveralls script to package.json; To use: 'npm run coveralls'
add jscoverage instrumented files to gitignore
run coverage/coveralls script as part of Travis CI
add Coveralls coverage badge to README
update shrinkwrap
Merge pull request #140 from twbs/coverage

code coverage measurement integration