Add a basic github extension and github task.

Refs #7.

gruel/build.gradle

@@ -16,6 +16,7 @@ dependencies {
     compile 'com.google.code.gson:gson:2.3.1'
     compile 'io.reactivex:rxjava-debug:1.0.1'
     compile 'net.rcarz:jira-client:0.5'
+    compile 'org.kohsuke:github-api:1.77'
 }
 
 sourceCompatibility=1.7

gruel/src/main/groovy/com/glasstowerstudios/gruel/GruelPlugin.groovy

@@ -2,6 +2,7 @@ package com.glasstowerstudios.gruel
 
 import com.glasstowerstudios.gruel.tasks.BumpVersionTask
 import com.glasstowerstudios.gruel.extensions.HipChatExtension
+import com.glasstowerstudios.gruel.extensions.GithubExtension
 import com.glasstowerstudios.gruel.extensions.GruelExtension
 import com.glasstowerstudios.gruel.tasks.UninstallTask
 
@@ -16,6 +17,7 @@ public class GruelPlugin implements Plugin<Project> {
     gruelExtension.setProject(aProject);
 
     aProject.extensions.create("hipchat", HipChatExtension);
+    def githubExtension = aProject.extensions.create("github", GithubExtension);
 
     aProject.task('bumpVersion', type: BumpVersionTask, description: 'Bumps the version number of the current release.', group: 'Management') << {
     }
@@ -38,6 +40,12 @@ public class GruelPlugin implements Plugin<Project> {
         gruelExtension.adjustOutputSettings(aProject);
         gruelExtension.adjustVersionNameSettings(aProject);
       }
+
+      if (aProject.hasProperty('github')) {
+        if (!githubExtension.isValid()) {
+          throw new Exception("When using the github extension, you must provide a repository, along with either an authentication token, or a username/password combination");
+        }
+      }
     }
   }
 }

gruel/src/main/groovy/com/glasstowerstudios/gruel/extensions/GithubExtension.groovy

@@ -0,0 +1,51 @@
+package com.glasstowerstudios.gruel.extensions;
+
+/**
+ * Plugin extension file. This allows specific parameters to be defined in the
+ * plugin itself. (Think of it like mini-plugins within the Gruel plugin).
+ *
+ * For the Github extension, the repository must always be provided, along with
+ * either a username/password combination, or an auth token.
+ */
+class GithubExtension {
+  String auth_token;
+  String username;
+  String password;
+  String repo;
+
+  boolean isValid() {
+    return repo != null && !repo.isEmpty() && ((auth_token != null && !auth_token.isEmpty()) || (username != null && !username.isEmpty() && password != null && !password.isEmpty()));
+  }
+
+  String getUsername() {
+    return username;
+  }
+
+  String getPassword() {
+    return password;
+  }
+
+  String getRepo() {
+    return repo;
+  }
+
+  String getAuthToken() {
+    return auth_token;
+  }
+
+  void setAuthToken(String aToken) {
+    auth_token = aToken;
+  }
+
+  void setUsername(String aUsername) {
+    username = aUsername;
+  }
+
+  void setPassword(String aPassword) {
+    password = aPassword;
+  }
+
+  void setRepo(String aRepo) {
+    repo = aRepo;
+  }
+}

gruel/src/main/groovy/com/glasstowerstudios/gruel/tasks/github/GithubTask.groovy

@@ -0,0 +1,13 @@
+package com.glasstowerstudios.gruel.tasks.github
+
+import com.glasstowerstudios.gruel.tasks.GruelTask
+import org.gradle.api.tasks.TaskAction
+
+class GithubTask extends GruelTask {
+  @TaskAction
+  def doTask() {
+    println "Github Username: " + project.github.username;
+    println "Github Password: " + project.github.password;
+    println "Github Repo: " + project.github.repo;
+  }
+}

test/java/build.gradle

@@ -43,10 +43,20 @@ gruel {
   commitHash gitSha()
 }
 
+github {
+  username='blah'
+  password='123abc456'
+  repo='jwir3/gruel'
+}
+
 hipchat {
   auth_token = "YOUR_AUTH_TOKEN_HERE"
 }
 
+project.task('outputGithubInfo', type: com.glasstowerstudios.gruel.tasks.github.GithubTask) {
+
+}
+
 project.task('notifyHipChat', type: com.glasstowerstudios.gruel.tasks.hipchat.HipChatNotificationTask) {
   color = 'yellow'
   message = 'A MESSAGE'