Added explicit named links for TOC

Using redcarpet means we lose the 'auto-ids' feature of kramdown, to
gain syntax highlighting. To compensate, I've put anchors next to the
headings.
Merge pull request #134 from squaremo/replace_auto_ids

Added explicit named links for TOC
fix docs following move of weave script and Makefile
also made a previously missed change: the tar location has moved
specify path
Merge pull request #143 from rade/97_tidy_toplevel_dir_doc

Fix docs following move of weave script and Makefile
update docs to reflect 'weave launch' change
remove detritus
tweak for broader compatibility
remove superfluous links at top of page
and make the heading link to github instead
button looks better
explain `weave status` output
fix typo
document new `weave connect`
part of #140
Merge pull request #155 from rade/130_launch_without_ip_doc

update docs to reflect 'weave launch' change
Merge pull request #160 from rade/140_weave_connect_doc

document new `weave connect`
Change layout for more pleasantness