Update main.h to allow for fast testing

Normally it would take about 8 days to for the network to complete the switch from PoW to PoS. These changes condense that time down to 100 minutes to permit testing in a reasonable timeframe.
Update main.cpp to create genesis block

changed block.nTime to current Unix time stamp and changed block.nNonce to a different value which should induce the creation of a new genesis block
Removed Peercoin official checkpoint

Checkpoints removed and the code set to input your genesis block hash once the genesis block has been mined.
Update main.h reverse previous commit

This essentially reserves previous commit 2a663093a42b13b55192e5159b8bcdc7af613d4c
Update main.cpp reserves previous commit

Reserves commit 7b415f400f1f893f6d97b004470cab7d248f030d
Corrected CreateNewBlock params to enable sucessful build
Generate Genesis block on start up of client

the genesis block will be mined on every start of the client.  hash and nonce values are recorded in the debug.log
Create GenesisBlockReadMe
Create genesis.cpp

this is a copy of Sunny Kings Genesis block generation code from the commit on ppcoin https://github.com/ppcoin/ppcoin/commit/b572a18b13d573e4dabc861cc6fa0699b2d22c96
Merge pull request #43 from Peershares/0.1.1-Testing-Only---Do-Not-Merge

0.1.1 testing only