Include qtwebkitversion.h to work in newer qtwebkit
Include qtwebkitversion.h to work in newer qtwebkit

This likely got pulled in automatically in a previous qtwebkit version, but now needs to be explicitly included.
mhoran/capybara-webkit,twalpole/capybara-webkit,thoughtbot/capybara-webkit,thoughtbot/capybara-webkit,mhoran/capybara-webkit,twalpole/capybara-webkit,thoughtbot/capybara-webkit,twalpole/capybara-webkit,mhoran/capybara-webkit,mhoran/capybara-webkit,twalpole/capybara-webkit,thoughtbot/capybara-webkit