hadley/devtools — pull request #111 by halpo (2012-07-02 22:23:49+00:00)
Title: Bug fix for trailing '/' in find_package.

very minor change to fix the error that pops up from trying

```r
install('devtools/')
```

rather than

```r
install('devtools')
```

That can often occur when using auto-complete for folder names.