Url support #462

- Added TransportCurl for http, https and ftp
- Added url support for import command

src/Transport.h

@@ -44,9 +44,9 @@ public:
 
 protected:
   std::string executable;
-	std::string protocol;
+  std::string protocol;	
   std::vector<std::string> arguments;
-	
+  
   std::string host;
   std::string path;
   std::string port;