Change unit testing to use node.js instead of Rhino.

See http://about.travis-ci.org/docs/user/languages/javascript-with-nodejs/
add performance.now to entropy after load.
Merge pull request #110 from lgarron/node.js-tests

Change unit testing to use node.js instead of Rhino.
addTimeToEntropy function.
Merge pull request #118 from bitwiseshiftleft/feature/performance_now_entropy

add performance.now to entropy after load.
typo.
added a guard for setDefaultParanoia(0).
comma. compiled version of sjcl.js
fix all jslint errors.
move predef to global comment.
docu updates. restructured ecc.js.