Added mention of accepting translations

Author: zonuexe

CONTRIBUTING.md

@@ -1,5 +1,7 @@
 # How to Contribute
 
+This project accepts contributions in various languages.  Not only development but also documentation and translation are important contributions.
+
 ## English
 
 ### Guideline (en)
@@ -18,6 +20,26 @@ If you are fixing a bug related to a GitHub issue, then first of all, thank you
 
 ----------
 
+## Simplified Chinese
+
+I am seeking a contribution on Chinese.  We also lack a README written in Simplified Chinese.
+
+### Guideline (zh-Hans)
+
+Please contribute.
+
+----------
+
+## Traditional Chinese
+
+I am seeking a contribution on Chinese.  We also lack a README written in Traditional Chinese.
+
+### Guideline (zh-Hant)
+
+Please contribute.
+
+----------
+
 ## Japanese
 
 ### Guideline (ja)