Bump version number, added new language to readme file

README.md

@@ -114,6 +114,7 @@ You can download sleek for Windows, MacOS and Linux from
   - Hungarian
   - Czech
   - Polish
+  - Russian
 
 A more detailed documentation can be found in <a href="https://github.com/ransome1/sleek/wiki/">sleeks wiki</a>.
 

package.json

 {
   "name": "sleek",
   "productName": "sleek",
-  "version": "1.2.4-rc.3",
+  "version": "1.2.4",
   "description": "todo.txt manager for Linux, Windows and MacOS, free and open-source (FOSS)",
   "synopsis": "todo.txt manager for Linux, Windows and MacOS, free and open-source (FOSS)",
   "category": "ProjectManagement",