Added checkSum parameter at getKeystationMainAddress()

Added kava-3

Added Band Protocol

fixed folder structure and updated to v0.5.6(cosmosjs) with checksum.

Updated position of popup window

applied the 0.5.1 version of CosmosJS.

Updated alert messages

Support cosmoshub-3

Support Kava-2. Used the same version as CosmosJS.

Added try, catch for postMessage