Fix for user-defined <localleader> for command mappings.
<localleader>-mapped commands are not dynamic, i.e. existing mappings
are not changed if <localleader> is updated after mappings have occurred.
To fix this, loading of .vimoutlinerrc must take place before the key
mappings.
1. Moved loading of .vimoutlinerrc to before key mappings.
2. Cleaned up comments a bit.
3. Removed the <localleader>,, command that forces reloading of settings.
	(this command points to non-existent configuration files anyway)
doc/votl_readme.txt is just a copy of old votl.txt, remove it.

Fixes #53
Small corrections and updates
Updated TODO.otl
Add VimOutliner icons to the repository.
Modified to install.sh to:
1. Turn off backup functionality. (filename_time_date.old files)
2. Remove old backup clutter. (filename_time_date.old files)
3. Remove old vo_base.vim files from syntax, ftdetect and ftplugin
Removed unnecessary reserved mappings.
Complete rewrite of plugin.
Only base processing functions in place at this time.
Allows for multiple equations and multiple variables per heading.
Support for integer, floating-point and scientific notation.
Complete rewrite of the outline math plugin.
Exampls in votl_math.otl
Added syntax conceal for math equations. Concealed equations appear as µ.
Modified math and result processing to maths can come either before or
after the variables:
	Heading {3*5} result=15
	Heading restult = 45 {9*10/2}
Command Review:
	,,mm	quick recalculate this heading and parents
	,,mt	recalculate children of this node, then the parents
	,,md	recalculate the whole document
	,,mh	hide equations in a µ conceal
	,,mH	unhide equations
Updates and corrections in the help file
Fixed issue #66.
Note: helptags must also be regenerated.
Removed last remnants of vo- and replaced them with votl-.
Ignore backup files as well
Added a VO colorscheme directory with some reasonable default colorschemes.
Added a VO colorscheme directory; like we had in the old days.
Removed color file.
Added a color scheme setting.
Added a list-based tags feature similar to org-mode.
Syntax Example:
	[_] 0% Heading [tag] [tag] [tag]
	    [_] 0% Heading [tag] [tag] [tag]
Commands:
	,,ct	set tag to next tag in current tag list
	,,cT	set tag to first tag in next tag list
Examples in vimoutliner/plugin/votl_checkbox.otl
Minor edit of comments.
Changed the math key mappings.
<localleader>==		compute current heading up to its parent
<localleader>=t		compute current tree (down then up)
<localleader>=d		compute entire document
<localleader>=h		hide math (set conceallevel=1)
<localleader>=H		show math (set conceallevel=0)