Removed expect script, Added -y to automate ubuntu installations

[mukulhase]

• Removes Expect Script.
• Removes need to type the password every single time.
• Up script can be used to notify the user when vpn connects.
• Gets nameservers pushed by IIIT instead of hardcoded nameserver.

[bakszero]

Add -e to echo in instances where you have used escape characters, otherwise in some systems, the \n is stored literally instead of adding a new line which throws up an error saying bad backslash in the linux_client.conf file.

[bakszero]

Not adding PR to master yet because Distros based on 14.04 Ubuntu and its derivates are not yet supported. Possibly waiting for an update on that issue from the openvpn github repository, and taking further action.