Merge pull request #5 from lastobelus/pluggable_matchers

Proposal: Pluggable Matchers
1.4.0 pre
move new/refined logic doc to doc/
make tests Ruby 1.8[.7-p371] friendly
add Travis CI
add license entry to gemspec
remove trailing white space
remove unnecessary $:.unshift
let matcher.rb load matchers/*.rb
organize matcher tests under matcher_*_test.rb
add line to catch breath
make sure each test is standalone
strip less
remove old "require 'rubygems'"
indent CSV tables in old dt_ tests
remove set_logic_matcher.md since it's in Rudelo