Added Path utility

ethutil/path.go

@@ -0,0 +1,20 @@
+package ethutil
+
+import (
+	"os/user"
+	"strings"
+)
+
+func ExpandHomePath(p string) (path string) {
+	path = p
+
+	// Check in case of paths like "/something/~/something/"
+	if path[:2] == "~/" {
+		usr, _ := user.Current()
+		dir := usr.HomeDir
+
+		path = strings.Replace(p, "~", dir, 1)
+	}
+
+	return
+}