diff --git a/README.md b/README.md
index 16e42fe..f6ed6df 100644
--- a/README.md
+++ b/README.md
@@ -9,10 +9,13 @@ npm i mfm-parser-pegjs
 
 ## Usage
 ```ts
-import { parse } from 'mfm-parser-pegjs';
+import * as mfm from 'mfm-parser-pegjs';
 
-// parse a MFM code
-const result = parse('this is a ***MFM text***');
+// parse a MFM text
+const result = mfm.parse('good morning ***everyone!***');
+
+// parse a MFM plain text
+const plainResult = mfm.parsePlain('I like the hot soup :soup:​');
 ```
 
 ## Usage (Repository)
@@ -39,6 +42,3 @@ npm run parse
 
 ## License
 This software is released under the [MIT License](LICENSE).
-
-This software includes codes of other softwares:
-- PEG.js: https://raw.githubusercontent.com/pegjs/pegjs/master/LICENSE
diff --git a/package.json b/package.json
index eca84f8..4c639b2 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "mfm-parser-pegjs",
-  "version": "0.1.1",
+  "version": "0.1.3",
   "description": "A MFM parser made with PEG.js",
   "main": "./built/index.js",
   "scripts": {
@@ -18,6 +18,7 @@
     "url": "git+https://github.com/marihachi/mfm-parser-pegjs.git"
   },
   "author": "Marihachi",
+  "license": "MIT",
   "devDependencies": {
     "@types/node": "^12.0.4",
     "@types/parsimmon": "^1.10.1",
diff --git a/src/parser/index.ts b/src/parser/index.ts
index b091ca2..ac87a8a 100644
--- a/src/parser/index.ts
+++ b/src/parser/index.ts
@@ -12,3 +12,9 @@ export function parse(input: string) {
 	trees = coreParser.parse(input);
 	return trees;
 }
+
+export function parsePlain(input: string) {
+	let trees: Tree[];
+	trees = coreParser.parse(input, { startRule: 'plainParser' });
+	return trees;
+}