Merge branch 'master' of https://github.com/Priyansh-Kedia/OpenGraphP…

…arser

README.md

@@ -36,12 +36,14 @@ Add the dependency
 
 # Implementation
 
-    private val openGraphParser = OpenGraphParser(this)
+    private val openGraphParser = OpenGraphParser(this, showNullOnEmpty = true)
 
 	openGraphParser.parse(linkUrl) // To parse the link provided
 
 The class required you to implement two callback functions, `onError(error: String)` and `onPostResponse(openGraphResult: OpenGraphResult)`. The former is invoked in case of error (incorrect url), and the latter is invoked on successful response. 
 
+The `showNullOnEmpty` is an optional parameter, with a default value of `false`. If set to `true`, the parser would invoke `onError` if the `title` and `description` are empty for the link provided.
+
 The data class ***OpenGraphResult*** contains: