Load configuration for all commands

This removes the filepath.Walk() when loading configuration,
as it can read a Beefile from another project in the $GOPATH.
Now config.LoadConfig() is called for all available commands.

main.go

@@ -1,3 +1,16 @@
+// Copyright 2013 bee authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License"): you may
+// not use this file except in compliance with the License. You may obtain
+// a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+// License for the specific language governing permissions and limitations
+// under the License.
 package main
 
 import (
@@ -8,6 +21,7 @@ import (
 
 	"github.com/beego/bee/cmd"
 	"github.com/beego/bee/cmd/commands"
+	"github.com/beego/bee/config"
 	"github.com/beego/bee/generate/swaggergen"
 	"github.com/beego/bee/utils"
 )
@@ -46,6 +60,8 @@ func main() {
 				c.PreRun(c, args)
 			}
 
+			config.LoadConfig()
+
 			// Check if current directory is inside the GOPATH,
 			// if so parse the packages inside it.
 			if strings.Contains(currentpath, utils.GetGOPATHs()[0]+"/src") && cmd.IfGenerateDocs(c.Name(), args) {