Added title setting (Requires tcell pull!) and optimized tab display. (#575)

* Added title setting (Requires tcell pull!) and optimized tab display.

* Changed tcell call to screen.

* Fixed bad reference for getting Buffer name.

cmd/micro/view.go

@@ -976,6 +976,8 @@ func (v *View) DisplayCursor(x, y int) {
 
 // Display renders the view, the cursor, and statusline
 func (v *View) Display() {
+	//Set title to the name of the current buffer
+	screen.SetTitle("micro: " + v.Buf.GetName())
 	v.DisplayView()
 	// Don't draw the cursor if it is out of the viewport or if it has a selection
 	if (v.Cursor.Y-v.Topline < 0 || v.Cursor.Y-v.Topline > v.Height-1) || v.Cursor.HasSelection() {