Add godoc reference badge to README.md.
Setup TravisCI to report cov stats to coveralls.io.
Add test coverage badge to README.md.
Move test coverage badge to top of README.md.
Remove test coverage report refs from README.md.

This is no longer needed since the repository is now configured to work
with coveralls.io for test coverage reporting.
Use a more specific license adjective.
Use testable examples and update doc.go README.md.

This commit adds an example test file so it integrates nicely with Go's
example tooling.

This allows the example output to be tested as a part of running the
normal Go tests to help ensure it doesn't get out of date with the code.
It is also nice to have the examples in one place rather than repeating it
in doc.go and README.md.

Links and information about the examples have been included in README.md in
place of the examples and doc.go has been updated accordingly.
Correct verify signature example doco link.
Add test for private key serialization.

Also move private key tests to their own file while here.
IMPORT PATH MODIFICATION CHANGESET
----------------------------------

Please use this changeset as the first one on top of the conformal codebase.
Note that if there are new imports, they need to be changed as part of this
changeset. In general, use "git rebase" on github.com/conformal's version
and apply this changeset first.