Add plasmoid to project.

plasmoid/README

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+Simple Cast Plasma Applet
+----------------------
+Goes with Simple Cast DataEngine to display and start service to allow casting/streaming Youtube and Bandcamp audio on device.
+
+
+-- Build instructions --
+
+cd /where/your/applet/is/generated
+mkdir build
+cd build
+cmake -DCMAKE_INSTALL_PREFIX=MYPREFIX .. 
+make 
+make install
+
+(MYPREFIX is where you install your Plasma setup, replace it accordingly)
+
+Restart plasma to load the applet 
+(in a terminal type: 
+kquitapp plasmashell 
+and then
+plasmashell)
+
+or view it with 
+plasmoidviewer -a YourAppletName
+
+-- Tutorials and resources --
+The explanation of the template
+https://techbase.kde.org/Development/Tutorials/Plasma5/QML2/GettingStarted
+
+Plasma QML API explained
+https://techbase.kde.org/Development/Tutorials/Plasma2/QML2/API