cleanup some unused ec.js code
message: data-driven tests
message: better variable names
ecdsa: add invalid tests for verifyRaw
ecdsa: use signum() over compareTo
Merge pull request #187 from dcousens/messagefixtures

Improved message fixtures and data driven testing
Merge pull request #190 from coinpunk/readmefixes

fix for a few readme examples
Merge pull request #192 from coinpunk/eccleanup

Cleanup some unused ec.js code