Updating the API from setChannel to sendToChannel

Author: ashwanthkumar

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

@@ -36,7 +36,7 @@ public Slack(String webhookUrl) {
      *
      * @param channel Channel to send
      */
-    public Slack setChannel(String channel) {
+    public Slack sendToChannel(String channel) {
         this.channel = "#" + channel;
         return this;
     }

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

@@ -20,7 +20,7 @@ public void shouldSetChannelWithHashPrefix() throws IOException {
         ArgumentCaptor<String> channelCaptor = ArgumentCaptor.forClass(String.class);
         SlackMessage message = new SlackMessage("hello");
         doNothing().when(slackService).push(anyString(), eq(message), anyString(), anyString(), channelCaptor.capture());
-        slack.setChannel("dev-group").push(message);
+        slack.sendToChannel("dev-group").push(message);
         assertThat(channelCaptor.getValue(), is("#dev-group"));
     }