Various updates

Updated the version of JSDuck to the latest. Updated to Ext JS 4.1.
Added support for multiple source roots.
Added support for a welcome page.
Document the new welcome option

Added documentation to the README about the welcome page option
Allow title and header to be configured
Fix the integration test by adding the missing welcome file.
Specify source encoding
Allow the guides parameter to be set.
Allow the guides parameter to be set.
Merge remote-tracking branch 'origin/master'
Added my changes back.
Added the guides to the README
Only use 1 of the source directory settings (stops warnings about file
not found)
ensure category columns are always wide enough for the text. Does mean
we lose the alignment across categories, but seems a small price for
being able to always read what is in the them.
Removed Eclipse files

These files are generated by Eclipse when the project is imported. They
shouldn't be committed.
allow setting of resources for the welcome page.
Allow built in classes to be documented
Merge pull request #1 from Pennine-View-Harrogate/master

Updated to JSDuck 3.10.5 and added various new configuration options