Moving SlackService to a separate package

This is so that wild card imports doesn't expose it by default

Author: ashwanthkumar

src/main/java/in/ashwanthkumar/slack/webhook/Slack.java

@@ -1,5 +1,7 @@
 package in.ashwanthkumar.slack.webhook;
 
+import in.ashwanthkumar.slack.webhook.service.SlackService;
+
 import java.io.IOException;
 
 import static in.ashwanthkumar.slack.webhook.util.StringUtils.isEmpty;

…nthkumar/slack/webhook/SlackService.java …/slack/webhook/service/SlackService.javasrc/main/java/in/ashwanthkumar/slack/webhook/SlackService.java renamed to src/main/java/in/ashwanthkumar/slack/webhook/service/SlackService.java src/main/java/in/ashwanthkumar/slack/webhook/SlackService.java renamed to src/main/java/in/ashwanthkumar/slack/webhook/service/SlackService.java

@@ -1,4 +1,4 @@
-package in.ashwanthkumar.slack.webhook;
+package in.ashwanthkumar.slack.webhook.service;
 
 import com.google.api.client.http.GenericUrl;
 import com.google.api.client.http.HttpRequest;
@@ -7,6 +7,7 @@
 import com.google.api.client.http.javanet.NetHttpTransport;
 import com.google.api.client.http.json.JsonHttpContent;
 import com.google.api.client.json.gson.GsonFactory;
+import in.ashwanthkumar.slack.webhook.SlackMessage;
 
 import java.io.IOException;
 import java.util.HashMap;

src/test/java/in/ashwanthkumar/slack/webhook/SlackTest.java

@@ -1,5 +1,6 @@
 package in.ashwanthkumar.slack.webhook;
 
+import in.ashwanthkumar.slack.webhook.service.SlackService;
 import org.junit.Test;
 import org.mockito.ArgumentCaptor;