remove bower and component support

[nlf]

[nathanboktae]

Do you still intend on supporting browser usage?

[hueniverse]

I've opted to build an ES5 version in nes and hawk. I'm conflicted about this but it seems like an easy enough thing to do for now as we figure out this transition period.

[nathanboktae]

OK, any particular motivation? the browserfied distro is 14k, a pleasant browser consumable module. ES3 browsers are dead, so no need to worry about them.

[ljharb]

Soon I'll be releasing a v6.x that restores ES5 compatibility. After that, v7.0.0 will remove bower/component support completely. As soon as possible, I will restore ES3 compatibility - not only are those engines not "dead" but it's not actually that difficult to support them, so I'll be doing so.