Patch - Add support for offline events/memberships

The buildform hook only supported offline contributions but should also work on offline event registrations and offline memberships
Add hook path for Wordpress
Cache instantiated jQuery Form object when using multiple times
Merge pull request #52 from Swingline0/wordpress-hook

Add hook path for Wordpress to Readme
Merge pull request #51 from relldoesphp/4.5-1.8

Patch - Add support for offline events/memberships
Merge pull request #53 from Swingline0/use-cached-jquery-dom-selector

Cache instantiated jQuery Form object when using multiple times
updated stripe to v2, make compatiable with webform_civicrm, code cleanup / generalization to work with civicrm + webform, prevent sensitive data transfer across the server to ensure PCI compliance, also notice and indentation fixes
Merge pull request #57 from kurund/4.5-1.8

updated stripe to v2, make compatiable with webform_civicrm, code cleanu...