Add golang code comments

db/db.go

@@ -64,6 +64,7 @@ func Exit() {
 
 }
 
+// Prepare prepares a query for parameterization for future execution
 func Prepare(sql string, param ...interface{}) string {
 
 	return fmt.Sprintf(sql, param...)

kvs/db.go

@@ -26,6 +26,7 @@ type DB struct {
 }
 
 func New(path string) (db *DB, err error) {
+// New sets up the underlying key-value store
 
 	var ds DS