chore: add CLA into contributing docs
chore: update contributors
chore: release v0.11.1
refactor(config): junit/coverage plugin configs

This stuff belongs to these plugins:
https://github.com/karma-runner/karma-coverage/commit/2ac2f71a1af13ff40674b4884173b6b487bf4f19
https://github.com/karma-runner/karma-junit-reporter/commit/ff21972c735f160e66085f8fedaa81c8efbb0e0f
refactor(config): remove the BC warnings
refactor(config): extract normalizeUrlRoot
fix(config): use polling by default

This should have been set to `true` in 18514d63534c82094b231eb1e0b0e41011519183. It's reversed.
test(e2e): fix typo in a comment
chore(deps): use HTTPS for fetching npm modules

This stops npm from erroring with useful messages like this:

    npm ERR! git clone git://github.com/karma-runner/karma-coverage Cloning into bare repository '/home/fidian/.npm/_git-remotes/git-github-com-karma-runner-karma-coverage-f5a5ab06'...
    npm ERR! git clone git://github.com/karma-runner/karma-coverage
    npm ERR! git clone git://github.com/karma-runner/karma-coverage fatal: unable to connect to github.com:
    npm ERR! git clone git://github.com/karma-runner/karma-coverage github.com[0: 192.30.252.129]: errno=Connection refused

and like this

	npm ERR! not a package /home/fidian/tmp/npm-17172/1382734998255-0.33902470069006085/tmp.tgz
	npm ERR! Error: ENOENT, open '/home/fidian/tmp/npm-17172/1382734998255-0.33902470069006085/package/package.json'
fix(proxy): handle proxied socket.io websocket transport upgrade

Fixes websocket upgrade handling for proxied routes.
This was motivated by long (10s) default timeouts when socket.io
attempts to use websockets and fails to perform the upgrade.
Merge pull request #815 from Demeterr/fix-websocket-proxy-better

fix(proxy): handle proxied socket.io websocket transport upgrade
chore: update contributors
chore: release v0.11.2