Merge pull request #41 from azvoleff/master

rst2pdf path fix
Improve documentation of rrst support.
Go out of Insert mode on BufEnter.
Minor improvement and bug fix.
Don't update the object browser twice.
Improve links in html version of documentation.
Escape the asterisk to make it a normal char.
Complete function args even if R isn't running.
Update object browser when opening/closing lists.
Use quicker regular expression.
Send selection if the line has the \Sexpr string.
Show latexmk as example of vimrplugin_latexcmd.
Fix OR operator.
Do not set the value of 'completefunc'.
Thanks to Chip Hogg for reporting the bug.
Make it possible to restart R.
Improve error messages detecting R in registry.
Fix bugs while deleting objects and opening lists.
Update.
Update vimcom version number to 0.9-9.
Suggest the use of latexmk.