This fixes #6: adds ability to publish library to Maven Central.

[ediweissmann]

This prepares the build.gradle file for publishing the library to Maven Central.
It's in the lines of this article here: http://yennicktrevels.com/blog/2013/10/11/automated-gradle-project-deployment-to-sonatype-oss-repository/

Next steps:

• create an account with OSS Sonatype for the "com.sendgrid" group
  (see https://docs.sonatype.org/display/Repository/Sonatype+OSS+Maven+Repository+Usage+Guide)
• create a public key and configure your ~/.gradle/gradle.properties
  (see https://docs.sonatype.org/display/Repository/How+To+Generate+PGP+Signatures+With+Maven and http://yennicktrevels.com/blog/2013/10/11/automated-gradle-project-deployment-to-sonatype-oss-repository/ )
• do your first publish to Maven Central

$ gradle uploadArchives

and release the artifacts: https://oss.sonatype.org/index.html#stagingRepositories

[brandonmwest]

Thank you!!

[motdotla]

❤️

[motdotla]

Working through this now

[motdotla]

Ticket is up here:

https://issues.sonatype.org/browse/OSSRH-8185

I'll be watching it. Upon approval of that group id, I'll move the next step. Thanks again @ediweissmann !

[ediweissmann]

My pleasure :)

[motdotla]

Notes for my future reference:

Here's details on the final release process:

https://docs.sonatype.org/display/Repository/Sonatype+OSS+Maven+Repository+Usage+Guide#SonatypeOSSMavenRepositoryUsageGuide-7d.StageReleaseswithGradle

1. Go to staging repositories

2. Select the recently upload jar, and click 'Close' (yes, close. I know, seems crazy)

3. It will take a few minutes to close as Sonatype runs some background tasks to make sure it is valid.

4. Refresh the page, checkbox the library again in the staging repositories and now you can click 'Release'.

5. "When the artifacts are in the release repository, add a comment to the original ticket asking for them to be published to Maven Central. For the first time they need to do it manually but since that on it will be synchronized automatically every hour"

[motdotla]

Ok, this is finally done:

http://search.maven.org/#search%7Cga%7C1%7Csendgrid

The example here is also updated: http://github.com/scottmotte/sendgrid-java-example