support for reading tables
support for paragraph's textruns in hyperlinks
Add utf-8 declaration and revert gemspec changes.
Use correct method `insert_text_after`.

Afaik the `insert_after` does not work, when i changed my code to use `insert_text_after` 
it worked. So changed the documentation to match that.
Merge pull request #10 from tmikoss/master

Update rubyzip to 1.0
Merge pull request #12 from nathanvda/master

Changed documentation to use method `insert_text_after`.
Remove Gemfile.lock.