Add Contributing guidelines doc
Add Contributing guidelines doc

presstab/PIVX,Darknet-Crypto/Darknet,Mrs-X/Darknet,keesdewit82/LasVegasCoin,midnight-miner/LasVegasCoin,ColossusCoinXT/ColossusCoinXT,slingcoin/sling-market,Bloom-Project/Bloom,benzmuircroft/REWIRE.io,npccoin/npccoin,PIVX-Project/PIVX,keesdewit82/LasVegasCoin,PIVX-Project/PIVX,ColossusCoinXT/ColossusCoinXT,48thct2jtnf/P,Darknet-Crypto/Darknet,keesdewit82/LasVegasCoin,DMDcoin/Diamond,PIVX-Project/PIVX,benzmuircroft/REWIRE.io,Mrs-X/PIVX,LIMXTEC/DMDv3,midnight-miner/LasVegasCoin,DMDcoin/Diamond,48thct2jtnf/P,ColossusCoinXT/ColossusCoinXT,pelorusjack/BlockDX,Mrs-X/PIVX,pelorusjack/BlockDX,48thct2jtnf/P,slingcoin/sling-market,ColossusCoinXT/ColossusCoinXT,Mrs-X/PIVX,npccoin/npccoin,keesdewit82/LasVegasCoin,PIVX-Project/PIVX,Mrs-X/Darknet,Mrs-X/Darknet,48thct2jtnf/P,Bloom-Project/Bloom,PIVX-Project/PIVX,presstab/PIVX,DMDcoin/Diamond,Darknet-Crypto/Darknet,midnight-miner/LasVegasCoin,LIMXTEC/DMDv3,benzmuircroft/REWIRE.io,slingcoin/sling-market,LIMXTEC/DMDv3,Mrs-X/PIVX,benzmuircroft/REWIRE.io,keesdewit82/LasVegasCoin,slingcoin/sling-market,npccoin/npccoin,presstab/PIVX,Mrs-X/PIVX,LIMXTEC/DMDv3,PIVX-Project/PIVX,npccoin/npccoin,Bloom-Project/Bloom,slingcoin/sling-market,presstab/PIVX,PIVX-Project/PIVX,48thct2jtnf/P,Bloom-Project/Bloom,midnight-miner/LasVegasCoin,benzmuircroft/REWIRE.io,ColossusCoinXT/ColossusCoinXT,slingcoin/sling-market,DMDcoin/Diamond,keesdewit82/LasVegasCoin,48thct2jtnf/P,presstab/PIVX,pelorusjack/BlockDX,npccoin/npccoin,PIVX-Project/PIVX,Darknet-Crypto/Darknet,pelorusjack/BlockDX,Mrs-X/Darknet,LIMXTEC/DMDv3,PIVX-Project/PIVX,Darknet-Crypto/Darknet,midnight-miner/LasVegasCoin,benzmuircroft/REWIRE.io,midnight-miner/LasVegasCoin,Mrs-X/PIVX,Bloom-Project/Bloom,Bloom-Project/Bloom,Mrs-X/Darknet,Darknet-Crypto/Darknet,pelorusjack/BlockDX,npccoin/npccoin,LIMXTEC/DMDv3,DMDcoin/Diamond,Mrs-X/Darknet,presstab/PIVX,DMDcoin/Diamond,pelorusjack/BlockDX,ColossusCoinXT/ColossusCoinXT