Merge pull request #275 from tracelytics/master

Public Repo RC 2.3.3.7 Changes
Merge pull request #278 from tracelytics/master

Release oboe-ruby 2.3.4
Merge remote-tracking branch 'origin/master' into prod
Merge pull request #280 from tracelytics/master

Release oboe-ruby 2.3.4.1 (Patch)
Detect Puma and/or Unicorn and report KV if found
Detect Passenger, thin, mongrel[2] and Trinidad(jruby)
Report more frameworks: Sinatra, Padrino, Grape & Cramp
Merge branch 'net_http_tests_fix' into issue_9
Remove duplicate gems to fix Ruby 1.8.7 warning:
Your Gemfile lists the gem rake (>= 0) more than once.
You should probably keep only one of them.
While it's not a problem now, it could cause errors if you change the
version of just one of them later.
Re-enable Cassandra per:
https://github.com/travis-ci/travis-ci/issues/1650
Downgrade Rubygems per: https://github.com/bundler/bundler/issues/2784
Merge pull request #276 from tracelytics/issue_276

Remove oboe_fu artifacts
Merge pull request #285 from tracelytics/issue_285

Change OboeHeroku __Init Key
Merge pull request #282 from tracelytics/issue_282

Report SampleRate & SampleSource per updated SWIG API
Merge pull request #13 from appneta/net_http_tests_fix

Remove SSL connection requirement from Net::HTTP tests
Merge remote-tracking branch 'public/master'
Merge branch 'master' into issue_11

Conflicts:
	oboe.gemspec
Merge pull request #11 from appneta/issue_11

oboe.gemspec doesn't specify Ruby 1.8 json dependency
Merge pull request #12 from appneta/code_improvements

CodeClimate Initiated improvements
Merge branch 'master' into issue_9

Conflicts:
	lib/oboe/api/layerinit.rb