Start RPC API implementation

version/version.go

@@ -1,5 +1,13 @@
 package version
 
+import (
+	"fmt"
+	"runtime"
+)
+
+// AppName represents the application name as the 'user agent' on the larger Ethereum network.
+const AppName = "Ethermint"
+
 // Version contains the application semantic version.
 //
 // TODO: How do we want to version this being that an initial Ethermint has
@@ -8,3 +16,8 @@ const Version = "0.0.0"
 
 // GitCommit contains the git SHA1 short hash set by build flags.
 var GitCommit = ""
+
+// ClientVersion returns the full version string for identification on the larger Ethereum network.
+func ClientVersion() string {
+	return fmt.Sprintf("%s/%s+%s/%s/%s", AppName, Version, GitCommit, runtime.GOOS, runtime.Version())
+}