Lead Mine A5 Reupload

This map update includes many of the changes that @LeSwordfish suggested. Thanks for the help.

Changes:

• The first area (Blu spawn to A) is now wider and the tunnels on this section have been removed
• A new area has been added for cap point A
• Blu now have a forward spawn
• The tunnels running from A to B have been greatly simplified
• There is no longer a bridge between the two red spawns
• A ramp has been added to make it easier for Blu to attack C

Any feedback would be appreciated.