Added pluggable random number generator
Added .gitignore
Added bower support, and support for loading as an AMD module

1. Added bower configuration
2. Moved source to src/ directory
3. Wireup so that when used as an AMD module, d3.layout.cloud mixes in with d3
4. Created AMD module example
Export cloud layout instead of d3
Merge pull request #1 from BrandwatchLtd/amd-return-fix

Export cloud layout function instead of d3 to match existing API
Merge remote-tracking branch 'davidtinker/random'

Conflicts:
	d3.layout.cloud.js
Merge remote-tracking branch 'brandwatch/amd'
Do not draw if box size is set to [0,0]
1.0.6