Fix readme formatting
Merge pull request #2 from jimhester/README

Add Readme and travis link
Add Jim Hester as contributor
Add some tests, escape text
Group `%or%`

Fixes #5
Add anything and any_chars

fixes #4
Typo in at_least
Add basically all the tests from regulaR
Export modifiers and re-document
Properly escape all function arguments
Remove old documentation
Fix all documentation problems

This should fix travis builds
Add URL Validation vignette