Added clear compile pre update script.
Fix comment. Closes #1958.
Tweak composer commands. Closes #1954.
Remove pre-install cmd for now.
Update HTML alias. Closes #1210.
Updates for the rename of the `HTML` facade.

See laravel/framework#1231
Merge pull request #1973 from bencorlett/patch-3

Updates for the rename of the `HTML` facade.
Merge remote-tracking branch 'upstream/develop'