~fnux/matrix-alertmanager-receiver

Display name label on matrix notification
Fix typo in Makefile
Add install target to Makefile
Allow HTTP listen address configuration
Add LICENSE (GPLv3)
Use HTML formatting for Matrix messages
Refactor config loading, message formatting
Refactor, read configuration from file
Properly handle incoming hooks
Matrix: join room, send dummy message
Populate README
Initial matrix client wiring
Initial project structure, HTTP server