Add Networking HTTP operations
diff --git a/openstack/networking/v2/networks/requests.go b/openstack/networking/v2/networks/requests.go
index 2e38839..7be3227 100644
--- a/openstack/networking/v2/networks/requests.go
+++ b/openstack/networking/v2/networks/requests.go
@@ -79,9 +79,7 @@
 // Get retrieves a specific network based on its unique ID.
 func Get(c *gophercloud.ServiceClient, id string) GetResult {
 	var res GetResult
-	_, res.Err = c.Request("GET", getURL(c, id), gophercloud.RequestOpts{
-		JSONResponse: &res.Body,
-	})
+	_, res.Err = c.Get(getURL(c, id), &res.Body, nil)
 	return res
 }
 
@@ -133,11 +131,7 @@
 		return res
 	}
 
-	// Send request to API
-	_, res.Err = c.Request("POST", createURL(c), gophercloud.RequestOpts{
-		JSONBody:     &reqBody,
-		JSONResponse: &res.Body,
-	})
+	_, res.Err = c.Post(createURL(c), reqBody, &res.Body, nil)
 	return res
 }
 
@@ -182,10 +176,8 @@
 	}
 
 	// Send request to API
-	_, res.Err = c.Request("PUT", updateURL(c, networkID), gophercloud.RequestOpts{
-		JSONBody:     &reqBody,
-		JSONResponse: &res.Body,
-		OkCodes:      []int{200, 201},
+	_, res.Err = c.Put(updateURL(c, networkID), reqBody, &res.Body, &gophercloud.RequestOpts{
+		OkCodes: []int{200, 201},
 	})
 
 	return res
@@ -194,6 +186,6 @@
 // Delete accepts a unique ID and deletes the network associated with it.
 func Delete(c *gophercloud.ServiceClient, networkID string) DeleteResult {
 	var res DeleteResult
-	_, res.Err = c.Request("DELETE", deleteURL(c, networkID), gophercloud.RequestOpts{})
+	_, res.Err = c.Delete(deleteURL(c, networkID), nil)
 	return res
 }