Laravel Menu Versions Save

Release v1.7.2

• Support Laravel 5.5 auto-discovery. (#199, #200)
• Remove period from item ID value so it can be used as an HTML element ID value. (#197)
• Minor documentation and code cleaning. (#193, #137, #192)

Fix breaking bug with v1.7.0 and items with no links. (v1.7.1)

Review all open pull requests (30+!) and merge in many of them. (v1.7.0)

• Additional functions to check existence of a menu, and add extra markup to the items.
• Several improvements to the documentation.
• Multiple fixes to multi-level nested menus. Including child menus not receiving classes properly.
• Passing null url allows omission of the href tag.

Deleting v1.7.0 published 20 minutes ago due to the patched bug.