Changes

Webget additions and changes (#69)

- Changed post:<data> to data:<data>, while keeping post backwards compat
- Added method:<method> arg for setting the method, supports GET, POST, HEAD, OPTIONS, PUT, DELETE, TRACE. Defaults to GET if no data, POST if data
- Broadened <entry[savename].failed> to all 2XX and 3XX responses
- Added <entry[savename].status> that returns the returned HTTP status code
- Added more usage examples
 (commit: de8a76d)