Remove default value of .jscsrc from the config option

As this has been announced as deprecated as of v0.4.0, we're now good
to drop it, as we're about to release v0.5.0.

Closes #20
Bump JSCS to 1.5.2
Fix author/contributors entries in package.json

Use full name of @markelog and remove url from @gustavohenke
Release v0.5.0