Improvements to scripts

[joshcangit]

1. URLs were updated.
2. Parse an argument to select continuous builds instead of snapshots.
3. Use $BASEDIR variable instead of using cd command.
4. Works with either wget or curl installed.

[mosleyrootz]

Sold

[divinity76]

since Scheib obviously isn't interested in maintaining this anymore, can we just get a proper fork and continue there(questionmark on my laptop is broken)

[divinity76]

seems development has continued on https://github.com/joshcangit/chromium-latest-linux :)