FWB-40684-webstore-module-backend

Allow fw_sig params to be sent in headers

Gives us an alternative to the existing parameter-based implementation
Also update source control management for Webs in 2014
Also should update that readme, it's over 4 years old at this point...

Also someone needs to give me (will-webs, william@webs.com on rubygems.org) push rights to this gem.
I'm not sure I understand this comment regarding string or symbol - this method creates a method in the ```Params``` helper, by converting the symbol from the FW_PARAMS array into a string, which returns the request parameter value that matches the fw_param value (again, symbol converted to string) or the equivalent header value.  At no point is anything a string - it's converted predefined symbol constant values to methods that return a string.  Unless I'm missing something that is what the README states