Add spm support

[afc163]

A nice package manager: http://spmjs.io
Documentation: http://spmjs.io/documentation

http://spmjs.io/package/layzr.js

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It is a browser-side package manager popular in China, suppling a complete lifecycle managment of package via spm.

If you need ownership of layzr.js in spmjs, I would like add it for your account after signing in http://spmjs.io.

spmjs/spm#781

[callmecavs]

couple things:

• you already added it to SPM (under your name)
• Bower is the defacto standard for front end package management

for those reasons, I'm gonna take a pass

[afc163]

I can transfer it to you.

[brunowego]

I think bower is a better choice (common between developers).

bower info layzr.js

or

bower install layzr.js

Take a look at #16