Merge pull request #223 from MDCox/master

Fix initialZoom
Search togglable
Homogenize controlDash module call
Choose node search method
Add documentation for searchMethod
multiple node selection now implemented
disabled double click to zoom if double click is on a node
edge bug where the inactive hover state would reveal is fixed, nodes now have active, selected, active:hover, selected:hover, inactive, inactive:hover styles
alchemy.js site has a link to main site in footer
Merge pull request #225 from MDCox/search

Add search methods
pretty sure this fixes the header logo link from issue no. 222
Merge pull request #228 from ifjorissen/ifj_issues

Misc. Bugs and Issues
Change edgeColour to edgeStyle
Document edgeStyle
twitter share button
Merge pull request #234 from ifjorissen/ifj_twitter

twitter share button
updating docs with cdn quickstart
removed tweet button from alchemy app and added it to alchemy.js landing page.
Merge pull request #235 from hustonhedinger/docs

updating docs with cdn quickstart
updated alchmy.js dependency for the site to commit no. 32f82fe60acbea8cc4c6b73760b1819e2452a419