Fix syntax matching for bold, italic, underline, code and verbatim.
Added a file to test org-mode syntax highlighting.
Merge pull request #146 from sj5/master

Fix syntax matching for bold, italic, underline, code and verbatim.
Syntax: Allow org list with more than one digit.
Syntax: reformat the syntax file a bit.
Syntax: TODO unify org.vim and orgagenda.vim.
Use BufRead instead of BufReadPost for filetype recognition

According to the documentation they are equivalent, but VIM wouldn't set the filetype when opening .org files using BufReadPost. It does with BufRead.
Merge pull request #150 from alejandrogomez/patch-1

Use BufRead instead of BufReadPost for filetype recognition
Add export to latex function.

Also some reformating.
Doc: Mention the export commands (including latex).
definition list require a space before ::

The latex export does not recognize a definition list without the space.
Therefore, the syntax hl should not indicate a definition list without the
leading space.
Create commands for the tag plugin (&reformat)
Add modline to TagsProperties.
pep8ify keybindings a bit.
Rewrite register() of the agenda plugin.
Add helper function to add cmds, mappings and menus in one step.
Agenda plugin uses the new helper function.
Use add_cmd_mapping_menu in the Export plugin.
Use add_cmd_mapping_menu in the Date plugin.
Fixes #151.