Update README URLs based on HTTP redirects

[ReadmeCritic]

Created with https://github.com/dkhamsing/frankenstein

GitHub Corrected URLs

Was	Now
https://github.com/HenrikJoreteg/SimpleWebRTC	https://github.com/andyet/SimpleWebRTC
https://github.com/LearnBoost/socket.io-client	https://github.com/socketio/socket.io-client
https://github.com/medialize/jQuery-contextMenu	https://github.com/swisnl/jQuery-contextMenu

HTTPS Corrected URLs

Was	Now
http://ace.c9.io/	https://ace.c9.io/
http://github.com/jrburke/requirejs	https://github.com/jrburke/requirejs

Other Corrected URLs

Was	Now
http://www.lesscss.org/	http://lesscss.org/
https://code.google.com/p/gdata-java-client/	https://github.com/google/gdata-java-client
https://code.google.com/p/google-toolbox-for-mac/	https://github.com/google/google-toolbox-for-mac
https://code.google.com/p/html5shiv/	https://github.com/afarkas/html5shiv

[CLAassistant]

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