doc: update readme.

uctakeoff · Dec 12, 2020 · eb7d819 · eb7d819
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diff --git a/README.md b/README.md
@@ -5,6 +5,10 @@ VS Code extension: counts blank lines, comment lines, and physical lines of sour
 * [github](https://github.com/uctakeoff/vscode-counter)
 * [Marketplace](https://marketplace.visualstudio.com/items?itemName=uctakeoff.vscode-counter)
 
+This extension uses other language extensions to determine the line of code.Therefore, you may need to install the language extension to support a new language.
+
+Conversely, as the number of language extensions increases, the range of support for this feature also increases.
+
 ## VSCode Counter 2.0 is released!
 
 * Experimental support for "**VSCode Remote Development**".

diff --git a/package.json b/package.json
@@ -2,7 +2,7 @@
   "name": "vscode-counter",
   "displayName": "VS Code Counter",
   "description": "Count lines of code in many programming languages.",
-  "version": "2.2.0",
+  "version": "2.2.1",
   "publisher": "uctakeoff",
   "author": {
     "name": "Ushiyama Kentaro"