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
Use lazyeval for NSE
Add lazyeval to travis install instructions
Modify grammar of the vignette
Use `<-` for assignment in vignette
Change all assignments to `->`
Olaf is headed the wrong way!

Shows you how often I use `<-`, couldn't even get it in the right
direction :)
Remove start_with and end_with

This is necessary to fix #7 - using those methods with n_times
Add any_of,any_except,between functions

Also move some functions to utils.R