Update serve_demo.py from port 8080 to 8000
Merge pull request #13 from salamdawood/master

Update serve_demo.py from port 8080 to 8000
8000 is restricted on my system, so switching back to 8080 but with proper documentation this time. =)
moved title above box
added images to tooltip. closes #8.
right-click to dismiss is gone. closes #14 and makes #9 more important. (see comments)
config options added for tooltip opening and onmouseout behavior
improved closeTooltip option
added pretty little interface for playing with treeConfig
modified left margin to fit everything onto the svg viewport.
merge conflicts resolved
changed link to images for ghpages
Merge branch 'gh-pages' of https://github.com/7yl4r/techtreejs into gh-pages