Added script to create AppImage

AppDirTemplate/.DirIcon

+icon.png
\ No newline at end of file

AppDirTemplate/macaon.desktop

+[Desktop Entry]
+Terminal=true
+Categories=Utility
+Icon=macaon
+Name=macaon
+Type=Application
+Exec=macaon

buildAppImage.sh

+#! /bin/bash
+
+rm -rf AppDir && cp -r ../AppDirTemplate AppDir && cmake .. -DCMAKE_INSTALL_PREFIX=/usr && make -j && make install DESTDIR=AppDir && linuxdeploy --appdir AppDir -d AppDir/macaon.desktop -i AppDir/macaon.svg --output appimage 
+