Update README.md

Author: Kuldeep Kapade

README.md

@@ -4,8 +4,8 @@ OpenAdViewability
 This JavaScript SDK is an open source version to track viewability metric for any ad element based on the MRC Viewability guidelines - http://mediaratingcouncil.org/081815%20Viewable%20Ad%20Impression%20Guideline_v2.0_Final.pdf. This implementation is extended from OpenVV - https://github.com/InteractiveAdvertisingBureau/openvv and developed by AdsNative. The purpose of this SDK vs. OpenVV is to provide an ability to track viewability of an ad element as a whole instead for just video ads. 
 
 ## Features
-* According to MRC guidelines it tracks the viewability of an ad if the ad is at least 50% viewable for at least 1 second.
-* If the ad unit is larger than 242,500 pixel area then it considers only at least 30% ad viewable for at least 1 second.
+* According to MRC guidelines it tracks the viewability of an ad if the ad is at least 50% viewable for at least for 1 second.
+* If the ad unit is larger than 242,500 pixel area then it considers only at least 30% ad viewable for at least for 1 second.
 * Unlike OpenVV it doesn't require Flash support from the browser. It tracks the viewability across all web browser platforms.
 * It tracks viewability even if the ad element is within the friendly-iframe.