add comments

function/proto/function.proto

@@ -44,6 +44,7 @@ message DeployRequest {
 message DeployResponse {
 }
 
+// List all the deployed functions
 message ListRequest {
 	// optional project name
 	string project = 1;
@@ -69,6 +70,7 @@ message ListResponse {
 	repeated Func functions = 1;
 }
 
+// Delete a function by name
 message DeleteRequest {
 	// Optional project name
 	string project = 1;