v0.12

Designs added:

• D-optimal
• Central Composite
• Box-Behnken
• Simplex Centroid
• Simplex Lattice

Other:

• Alias calculation
• Hit and Run sampler
• Coded to Actual conversion

pypi update

Needed to bump version number to satisfy pypi.

Initial Release

Merge pull request #15 from statease/github-license-detect

Added appendix to apache license so licensee will pick it up.