Improve linux building (#111)

* Improve Linux platform by adding metadata and improve description

* Improve readme

* Improve metainfo

* Fix wrong desktop file

* Improve readme

* Improve readme

* Appstream doesn't like h1

* Add CMake and Ninja to .gitignore

* Fix issues




3


4

* Revert readme keeping only Linux part

* Change comment on desktop file

* Align metainfo

* Decouple Readme from Linux building instructions

.gitignore

@@ -276,3 +276,25 @@ out/
 # Windows XP stuff
 DebugWinXp/
 ReleaseWinXp/
+
+### CMake ###
+CMakeLists.txt.user
+CMakeCache.txt
+CMakeFiles
+CMakeScripts
+Testing
+Makefile
+cmake_install.cmake
+install_manifest.txt
+compile_commands.json
+CTestTestfile.cmake
+_deps
+
+### CMake Patch ###
+# External projects
+*-prefix/
+
+### Ninja ###
+.ninja_deps
+.ninja_log
+build.ninja