Merge pull request #81 from nathan78906/grammarly

Ran *.md files through grammarly service

Author: thinkingserious

CHANGELOG.md

@@ -29,7 +29,7 @@ All notable changes to this project will be documented in this file.
 
 ### Changed
 - Unicode characters in X-SMTPAPI header values or keys are now encoded as ASCII escape sequences.
-- Null header values or keys result in a `ArgumentNullException`.
+- Null header values or keys result in an `ArgumentNullException`.
 
 ### Fixed
 - Removed `System.Core` reference

CONTRIBUTING.md

@@ -89,7 +89,7 @@ See the [examples folder](https://github.com/sendgrid/smtpapi-csharp/tree/master
 <a name="understanding-the-codebase"></a>
 ## Understanding the Code Base
 
-<!---optionally provide a brief summary explaning the architecture of the code-->
+<!---optionally provide a brief summary explaining the architecture of the code-->
 
 **/Smtpapi Example**
 

README.md

@@ -10,7 +10,7 @@
 
 # Announcements
 
-All updates to this module is documented in our [CHANGELOG](https://github.com/sendgrid/smtpapi-csharp/blob/master/CHANGELOG.md).
+All updates to this module are documented in our [CHANGELOG](https://github.com/sendgrid/smtpapi-csharp/blob/master/CHANGELOG.md).
 
 # Table of Contents
 - [Installation](#installation)

UseCases/README.md

@@ -1,4 +1,4 @@
-This documentation provides examples for specific use cases. Please [open an issue](https://github.com/sendgrid/smtpapi-csharp/issues) or make a pull request for any use cases you would like us to document here. Thank you!
+This directory provides examples for specific use cases. Please [open an issue](https://github.com/sendgrid/smtpapi-csharp/issues) or make a pull request for any use cases you would like us to document here. Thank you!
 
 # Table of Contents
 No use cases yet