README.md: Update URLs after repository move

Added checkout commands.

Added windows build instructions.

Added example and build instructions for Linux.

Added installing of needed header files.

Added install targets and renamed example's name to be more unique.

Build fix for Ubuntu.

Play FreeRDP's audio through Qt.

Added audio playback support.

Limit framerate to reduce cpu usage.

Fixed heap corruption bug.

Workaround for heap corruption bug.

Fixed keyboard not working in Linux.

Added keyboard support.

Terminate example program if connection breaks or fails to connect.