Add support for count Cyrillic words

Add unicode range for Cyrillic characters

Author: amka

src/js/simplemde.js

@@ -1049,7 +1049,7 @@ function extend(target) {
 
 /* The right word count in respect for CJK. */
 function wordCount(data) {
-	var pattern = /[a-zA-Z0-9_\u0392-\u03c9]+|[\u4E00-\u9FFF\u3400-\u4dbf\uf900-\ufaff\u3040-\u309f\uac00-\ud7af]+/g;
+	var pattern = /[a-zA-Z0-9_\u0392-\u03c9\u0410-\u04F9]]+|[\u4E00-\u9FFF\u3400-\u4dbf\uf900-\ufaff\u3040-\u309f\uac00-\ud7af]+/g;
 	var m = data.match(pattern);
 	var count = 0;
 	if(m === null) return count;
@@ -2010,4 +2010,4 @@ SimpleMDE.prototype.toTextArea = function() {
 	}
 };
 
-module.exports = SimpleMDE;
+module.exports = SimpleMDE;