Add support for multiplySeriesWithWildcards
Fix multiplySeriesWithWildcards help message
Merge remote-tracking branch 'upstream/master'
Added test for multiplySeriesWithWildcards
Fixed blank line lint error
Register "grep" as a render series function

When using the function grep(series, pattern) the following error is reported:

 KeyError at /render/  u'grep'

The fix is to register the keyword "grep" with the existing grep function in the SeriesFunctions dictionary.
Merge pull request #981 from nzlosh/patch-1

Register "grep" as a render series function
Merge pull request #634 from fhossain/master

Add multiplySeriesWithWildcards