Added appendTo() function to imitate '>>' redirect-and-append pipe.
Renamed appendTo() to toEnd().
Fixed README so that it's based off in-source documentation
Updated test for toEnd() to be more comprehensive.
Fixed README so that it's based off in-source documentation

Renamed appendTo() to toEnd().
Updated test for toEnd() to be more comprehensive.
Fixed type of to() - > toEnd().
Merge branch 'master' of github.com:andreweduffy/shelljs
Merge pull request #78 from andreweduffy/master

Addition of a toEnd() function modeled after the Unix >> pipe.