Add em-http-request instrumentation support.
Attaches instrumentation directly to method instead of overwriting headers callback.
Typo.
Merge remote-tracking branch 'appneta/master'

Conflicts:
	lib/oboe/config.rb
Compatibility with Ruby 1.8
Unlock moped tests to all versions
Updated instrumentation for Moped v2
Unlock moped gem in Gemfile
Remove debug leftover
Fix < "2.0.0" regression
Cache bundler installs between test runs
Fix yaml format
Remove deployment flag for bundler
Merge pull request #63 from appneta/issue_63

Moped 2.0 is backwards incompatible - update instrumentation
Remove references to sample_rate
Bump version to 2.7.0 for minor release
Update CHANGELOG with latest release info.
Note to add oboe gem to "end" of Gemfile
Use toHexString to return the proper xtrace value
Add tests to validate returned xtrace header