mv _.jshintrc to .jshintrc

removes: indent, regexp, smarttabs, trailing, white
adds: forin, freeze, noempty, nonbsp, nonew, maxcomplexity, maxdepth
  maxlen, maxparams, maxstatements, eqnull
Merge pull request #4 from dduugg/features/jshintrc

mv _.jshintrc to .jshintrc