Tracking issue for Zilliqa JSON-RPC APIs

[JamesHinshelwood]

• [x] GetCurrentMiniEpoch
• [ ] GetCurrentDSEpoch
• [ ] GetNodeType
• [x] GetNetworkId - #451
• [ ] CreateTransaction - #454
• [ ] GetTransaction
• [ ] GetSoftConfirmedTransaction
• [ ] GetDsBlock
• [ ] GetDsBlockVerbose
• [ ] GetTxBlock
• [ ] GetTxBlockVerbose
• [ ] GetLatestDsBlock
• [x] GetLatestTxBlock - #453
• [x] GetBalance - #450
• [x] GetMinimumGasPrice - #452
• [ ] GetPrevDSDifficulty
• [ ] GetPrevDifficulty
• [ ] GetSmartContracts
• [ ] GetContractAddressFromTransactionID
• [ ] GetNumPeers
• [ ] GetNumTxBlocks
• [ ] GetNumDSBlocks
• [ ] GetNumTransactions
• [ ] GetTransactionRate
• [ ] GetTxBlockRate
• [ ] GetDSBlockRate
• [ ] GetShardMembers
• [ ] GetCurrentDSComm
• [ ] DSBlockListing
• [ ] TxBlockListing
• [ ] GetBlockchainInfo
• [ ] GetRecentTransactions
• [ ] GetShardingStructure
• [ ] GetNumTxnsTxEpoch
• [ ] GetNumTxnsDSEpoch
• [ ] GetSmartContractSubState
• [ ] GetSmartContractState
• [ ] GetSmartContractCode
• [ ] GetSmartContractInit
• [ ] GetTransactionsForTxBlock
• [ ] GetTransactionsForTxBlockEx
• [ ] GetTotalCoinSupply
• [ ] GetTotalCoinSupplyAsInt
• [ ] GetPendingTxns
• [ ] GetMinerInfo
• [ ] GetTxnBodiesForTxBlock
• [ ] GetTxnBodiesForTxBlockEx
• [ ] GetTransactionStatus
• [ ] GetStateProof
• [x] GetVersion - #202
• [ ] GetRawDSBlock
• [ ] GetRawTxBlock

[JamesHinshelwood]

Moved to README.md