added new assert WithinDuration
expanded test for WithinDuration to test for both |a-b|>=dt and |b-a|>=dt
expanded test for WithinDuration to test for negative durations
objx transition complete
Merge pull request #21 from viblo/feature-WithinDuration

Feature within duration
Fix dependencies for 'go get'.
Merge pull request #22 from benbjohnson/fix-dependencies

Fix dependencies for 'go get'.
Added repeatability to On/Return expectations.
Now expectations for method calls abides the repeatability argument.
WrittenHeaderInt->StatusCode
Initial buildup/teardown functionality for issue 19
Renamed before/after methods and interfaces to setup/teardown
Updated documentation with some information about testing suites
One more documentation update for suites
Some clarification for the documentation in the example test suite.
Removing unnecessary defer (the call was already at the end of the function it was in
)
Merge remote-tracking branch 'origin/master' into feature/testing-suite

Pulling latest changes to testify into the feature/testing-suite branch,
since I'm using the feature/testing-suite branch for production code and
want to make sure I'm also using all of the latest changes from master.
Merge pull request #23 from realistschuckle/master

Added Repeatability Statements to Expectations
Merge pull request #24 from stretchr/feature/testing-suite

Testing Suite (and setup/teardown) functionality
Updated README with a link to the suite package section