Update README.md

Author: jdnichollsc

README.md

@@ -126,10 +126,10 @@ Linking the package manually is not required anymore with [Autolinking](https://
 Methods       | Action
 ------------- | ------
 `open`        | Opens the url with Safari in a modal on iOS using **SFSafariViewController**, and Chrome in a new custom tab on Android. On iOS, the modal Safari will not share cookies with the system Safari.
-`close`       | Dismisses the system's presented web browser
+`close`       | Dismisses the system's presented web browser.
 `openAuth`    | Opens the url with Safari in a modal on iOS using **SFAuthenticationSession/ASWebAuthenticationSession**, and Chrome in a new custom tab on Android. On iOS, the user will be asked whether to allow the app to authenticate using the given url **(OAuth flow with deep linking redirection)**.
-`closeAuth`   | Dismisses the current authentication session
-`isAvailable` | Detect if the device supports this plugin
+`closeAuth`   | Dismisses the current authentication session.
+`isAvailable` | Detect if the device supports this plugin.
 
 ### iOS Options