Merge pull request #77 from justmarkham/master

add links to vw installation instructions
Overload equality operator to handle floating-point comparisons.
added links for statistical references
Merge pull request #81 from sinanuozdemir/master

added links for statistical references
Merge pull request #80 from bobuva/master

Overload equality operator to handle floating-point comparisons.
initial draft
clean up, add links
add note on committers
Merge pull request #82 from ajschumacher/contributing.md

contributing.md
catch up the credits with gadsdc1 folks