Making sure errors don't halt the import.

Wrapped file operations in a begin/rescue block.
Merge branch 'master' of git://github.com/mojombo/jekyll
Remove the coverage rake task

RCov does not work on Ruby 1.9.x
Add simplecov as a dependency

Simplecov works with Ruby 1.9.x for generating test coverage
Add SimpleCov to the unit tests
add the coverage directory to .gitignore
filter out test files in coverage results
Merge pull request #765 from mattr-/fix-coverage

Fix coverage
Update history to reflect merge of #765.
Refine CONTRIBUTE with more detail and better formatting.
Merge pull request #671 from fzero/master

Rescue from import errors on Wordpress.com plugin.
Printing error message in WP.com migrator. #671.
Reflected merging of #671 in History.