MetroControl Focus Identifier

1. Put emphasis on the current control that has focus
2. Removed form control (minimize, maximize and close) tab stop
3. Enabled MetroTextBox.Focus
Merge remote-tracking branch 'upstream/master'
Added MetroContextMenu in Project

Added MetroContextMenu in Project
Added MetroMessageBox

Created MetroMessageBox controls.
Special credit to my friend Joseph Lambert Reyes for the idea
Update README.md
Updated Project Demo

1. Added sample for MetroContextMenu
2. Added sample for MetroMessagebox
Merge branch 'master' of https://github.com/dennismagno/winforms-modernui
Update README.md
Update README.md
Update README.md
Update README.md
Update README.md
Fix Color of ComboBox and MetroImage

1. Fixed issues with combobox color
2. Add new property for Form image, to allow inverting of image color
when changing theme to dark
Update README.md
Merge pull request #156 from dennismagno/master

MetroControl Focus Identifier