Trim line length in error generator
Merge pull request #802 from rspec/samphippen/trim-error-generator-lines

Trim line length in error generator
Fix minor typo (veryifing -> verifying)
Merge pull request #804 from andyw8/patch-1

Fix minor typo (veryifing -> verifying)
Split public from private interface of MessageExpectation.

These things were combined all together, which made
it more difficult to tell which was which. Also,
`MessageExpectation` was labeled `@private`, which
prevented these methods from showing up on rubydoc.info.
Improve MessageExpectation docs.

- Group the methods.
- Specify return values.
- Remove blank lines that were rendering in
  example output.
Merge pull request #805 from rspec/doc-improvements

Doc improvements
Updated travis build scripts (from rspec-dev)
Merge pull request #807 from rspec/update-travis-build-scripts-2014-10-30-for-master

Updates from rspec-dev (2014-10-30)
Add appveyor config file.
Add cucumber and ruby 2.0 to appveyor build.