Add specs for Rex::MIME::Encoding
Add specs for Rex::MIME::Header
Add specs for Rex::MIME::Part
Add first specs for Rex::MIME::Message
Add specs for add_part and add_part_attachment
Add specs for add_part_inline_attachment
Add some Message specs
Fix Rex::MIME::Header#parse
Fix Rex::MIME::Message#initialize boundaries parsing
Add @jlee-r7's feedback
Use a part subject to describe #add_part
Describe setters just expecting how assignement to properties should happen
Move let helpers to describe groups
Move once more let into describe
auxiliary/scanner/http/soap_xml cleanup

This:

* Corrects Ruby style (most) everywhere
* Uses Rex's sleep, converts to milliseconds -- seconds are too granular
* Moves begin/rescue inside nested verb+noun loop
* Prints errors even if not in verbose mode
* Corrects URI construction when PATH ends with /
Add status message that displays delay between requests
Creation of rdcmanager_creds.rb
Cleanup
Add specs to verify server header matching
Add another header spec