Add missing vendor files

[jaonoctus]

not composer.json yet.

i'll do it latter, with a .gitignore (to ignore vendor/ dir)

#30

[CameronWills]

@jaimehgb. Aren't PRs like this a massive risk? These minified vendor JS files could have been modified to include malicious code? Given the recent hack of the Stellar web wallet BlackWallet.co
Can I suggest that any JS files or changes are only done by the repository owner.

[jaonoctus]

@CameronWills I agree with you.

I just downloaded this missing files from the original site. You don't have to trust me, you can check diff in each one.

But yeah, it's recommendable to use a composer.json or package.json file instead (I don't have time to do yet. This PR is a workaround)