Merge pull request #54 from dhsrocha/master

Added example file, updated .gitignore and README.

Author: Matt Bernier

.gitignore

@@ -22,3 +22,6 @@ repo/
 /.settings/
 /.classpath
 /.project
+
+# Environment files
+.env/*.*

README.md

@@ -117,7 +117,34 @@ try {
 
 <a name="usage"></a>
 # Usage
-[Library Usage Documentation](USAGE.md)
+
+- [Example Code](https://github.com/sendgrid/java-http-client/tree/master/examples)
+- [Library Usage Documentation](USAGE.md)
+
+
+The example uses SendGrid, you can get your free account [here](https://sendgrid.com/free?source=java-http-client).
+
+First, update your environment with your [SENDGRID_API_KEY](https://app.sendgrid.com/settings/api_keys).
+
+```bash
+echo "export SENDGRID_API_KEY='YOUR_API_KEY'" > sendgrid.env
+echo "sendgrid.env" >> .gitignore
+source ./sendgrid.env
+```
+
+```bash
+mvn package
+cd examples
+javac -classpath {path_to}/sendgrid-java-http-client-4.0.0-jar.jar:. Example.java && java -classpath {path_to}/sendgrid-java-http-client-4.0.0-jar.jar:. Example
+```
+
+## Environment Variables 
+
+You can do the following to create a .env file:
+
+```cp .env_example .env```
+
+Then, just add your API Key into your .env file.
 
 <a name="roadmap"></a>
 # Roadmap
@@ -144,4 +171,4 @@ java-http-client is guided and supported by the SendGrid [Developer Experience T
 java-http-client is maintained and funded by SendGrid, Inc. The names and logos for java-http-client are trademarks of SendGrid, Inc.
 
 # License
-[The MIT License (MIT)](LICENSE.md)
+[The MIT License (MIT)](LICENSE.txt)

examples/.env_sample

@@ -0,0 +1 @@
+export SENDGRID_API_KEY=''