Wrapper to gracefully avoid unsupported OS's (take 2)

Per your requests, submitting to develop branch (https://github.com/razorsedge/puppet-vmwaretools/pull/17).  Travis is passing, and I've tested on a Solaris 10 VMware VM.  It's as if the module isn't there at all.  It appears in my ENC yaml, but the report says nothing about vmwaretools.

I'm going (soon), to move on to working on your SLES support in this module.  We have enough SLES here that I should be able to get your repos cleaned up and functional with zypper.  I'll keep working from the develop branch, unless you'd rather I do something different.

P.S. thanks for the git help, I was able to "cherry-pick" the commits into a new branch that I pulled from your develop...found something on stackoverflow on it.