update docs to reflect 'weave launch' change
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
Merge pull request #161 from squaremo/change_ghpages_theme

Change layout for more pleasantness
note MAC address entry expiry