Create coins.php

Just chucking some stuff together at the moment. Nothing will work right now :)
Update coins.php
Update omnicoin.php
Update coins.php
Update coins.php
Update coins.php
Update omnicoin.php
Update coins.php
Update omnicoin.php
Update coins.php
Update coins.php
Update coins.php
Merge pull request #15 from Omnicoin-Project/add-coins-page

Add coins.php page