Use Beta...

1. Make an account for Mineshafter and Minecraft

2. Download these three things:
    = http://mineshafter.appspot.com/downloads/grab file=agttaW5lc2hhZnRlcnISCxIKU3RvcmVkRmlsZRi1vRAM

    = http://mineshafter.appspot.com/downloads/grab?file=agttaW5lc2hhZnRlcnISCxIKU3RvcmVkRmlsZRjC2xMM

    = http://mineshafter.appspot.com/downloads/grab?file=agttaW5lc2hhZnRlcnISCxIKU3RvcmVkRmlsZRjpuRkM

3. Make a folder for these things

4. Place the three things in the folder

5. Click on Mineshafter-proxy

6. Type in your MINECRAFT Username and Password

7. Click Login

8. Your Done!