Add AMD support

[asciidisco]

Could you please add AMD support?!
You could use UMD like here: https://github.com/umdjs/umd/blob/master/commonjsStrictGlobal.js

Thx.

[alh84001]

+1 to that

[mickdelaney]

+1

[rodneyrehm]

Issue resolved with v1.8.0