IViewInjector new methods about slimadapter

[linisme]

Thanks for feedback～

I will add lots of common methods in the coming version, but maybe still can not consider every single method...

so, maybe these 2 way will be helpful:

1. Extends the CustomViewInjector to match you needs, the docs & example is on the way.
2. Fork & Contribute your code to improve this lib

Thanks again#

[fcannizzaro]

ok #2 submitted :)