Replace godep with dep

vendor/github.com/go-openapi/spec/spec.go

@@ -16,6 +16,8 @@ package spec
 
 import "encoding/json"
 
+//go:generate curl -L --progress -o ./schemas/v2/schema.json http://swagger.io/v2/schema.json
+//go:generate curl -L --progress  -o ./schemas/jsonschema-draft-04.json http://json-schema.org/draft-04/schema
 //go:generate go-bindata -pkg=spec -prefix=./schemas -ignore=.*\.md ./schemas/...
 //go:generate perl -pi -e s,Json,JSON,g bindata.go
 
@@ -27,10 +29,15 @@ const (
 )
 
 var (
-	jsonSchema    = MustLoadJSONSchemaDraft04()
-	swaggerSchema = MustLoadSwagger20Schema()
+	jsonSchema    *Schema
+	swaggerSchema *Schema
 )
 
+func init() {
+	jsonSchema = MustLoadJSONSchemaDraft04()
+	swaggerSchema = MustLoadSwagger20Schema()
+}
+
 // MustLoadJSONSchemaDraft04 panics when Swagger20Schema returns an error
 func MustLoadJSONSchemaDraft04() *Schema {
 	d, e := JSONSchemaDraft04()