Updated version number to reflect hadley's advice

http://r-pkgs.had.co.nz/description.html#version
http://r-pkgs.had.co.nz/release.html

The first release on CRAN will be 1.0.0.  We'll increment to 1.0.1, 1.0.2 as we fix bugs, etc., and bump to 1.1.0 when we release the next batch of major features (multi-class optimization, early stoping in greedy optimization if the error decreases.).
Merge branch 'master' into vignette
Have travis build vignette

So we’ll know if it breaks.  Also running all CRAN checks.
bumped version number

We’ve added a vignette, updated docs, and changed testing