added marginable.js and revised test cases
refactored effective width and height into marginables
added axies for row charts
finished implementing a non-interactive row chart
chartRegistry was flooding global namespace

Without using `new`, the `this` context is the global context
row-chart is now interactive
finishing test cases for row chart
added wiki for row chart
update package.js
update package.js
Merge pull request #148 from rthompson-au/master

No more flooding of global namespace. Now dc should be the only global variable added.
Merge branch 'master' of github.com:NickQiZhu/dc.js
update d3 version
added some stylings to row chart
Merge branch 'master' of github.com:NickQiZhu/dc.js
[#146] enable runtime dimension and group swap on coordinate-grid charts
fixed issues with xAxis on row chart
Merge branch 'master' of github.com:NickQiZhu/dc.js

Conflicts:
	dc.min.js
missing semicolon
Multiple filter creteria per chart now supported:
Taking advantage of the new crossfilter release support for more than one filter creterion was added. Creteria are merged by OR to create a filter function for crossfilter. The user can trigger multiple selection by holding the Ctrl or Shift key while clicking. A more detailed explanation of the implementation and changes it introduced will follow.