Update README.rst

notes about subtree.
Add example of emphasized lines with line numbers.
Even after 'grunt build', theme.css needed an update.
Merge pull request #55 from chebee7i/emphlinenos

Emphasized Lines and Line Numbers
fixes #56, emphasized lines
fixes #48, change note coloring to be pastels to avoid nesting problems
so I can have a life and not worry about people who use these things
weirdly
remove external link style
fixes #58, seealso titling
fixes #61, better link for mobile
toc includehidden=true, fixes #60
partial fix for #64
add note about running locally. fixes #68
align parameters list if possible, fixes #70
Fix footer links to avoid redirects
Merge pull request #74 from jodal/patch-1

Fix footer links to avoid redirects
fixes #77
Merge branch 'master' of github.com:snide/sphinx_rtd_theme
Moving JS to bottom
Merge remote-tracking branch 'snide/master' into move-javascript-to-bottom

Conflicts:
	sphinx_rtd_theme/layout.html
Renaming block "extrahead" to "inlinejs" and moving to bottom of page.