diff --git a/README.md b/README.md
index 16ee7e4..415fd83 100644
--- a/README.md
+++ b/README.md
@@ -26,7 +26,7 @@ Usage
 ------
     cordova.plugins.fileOpener2.open(
         filePath, 
-        fileType, 
+        fileMIMEType, 
         {
             error : function(){ }, 
             success : function(){ } 
@@ -60,11 +60,13 @@ Open a PDF document with the default PDF reader and optional callback object:
 Notes
 ------
 
-- For properly opening _any_ file, you must already have a suitable reader for that particular file type already installed on your device. Otherwise this will not work.
+- For properly opening _any_ file, you must already have a suitable reader for that particular file type installed on your device. Otherwise this will not work.
 
 
 - [It is reported](https://github.com/pwlin/cordova-plugin-file-opener2/issues/2#issuecomment-41295793) that in iOS, you might need to remove `<preference name="iosPersistentFileLocation" value="Library" />` from your `config.xml`
 
+- If you are wondering what MIME-type should you pass as the second argument tp `open` function, [here is a list of all known MIME-types](http://svn.apache.org/viewvc/httpd/httpd/trunk/docs/conf/mime.types?view=co)
+
 
 Additional Android Functions
 -----------------------------