Update metadata for 0.1.2 release

This commit updates Modulefile for a 0.1.2 release. 0.1.2 represents
a bug-fix release that is mostly focussed on testing improvements
but includes a few important fixes.
Merge pull request #29 from puppetlabs/release/0.1.2

Update metadata for 0.1.2 release
new fact: lvm_support, and related rspec test suite