[FEATURE] Added Library To The Client

#requiresJar() should be changed.

pom.xml

@@ -6,7 +6,7 @@
 
     <groupId>org.parabot</groupId>
     <artifactId>client</artifactId>
-    <version>2.6.2</version>
+    <version>2.6.3</version>
 
     <packaging>jar</packaging>
 

src/main/java/org/parabot/core/lib/jpushbullet/JPushBullet.java

@@ -0,0 +1,71 @@
+package org.parabot.core.lib.jpushbullet;
+
+import org.parabot.core.Core;
+import org.parabot.core.Directories;
+import org.parabot.core.build.BuildPath;
+import org.parabot.core.lib.Library;
+
+import java.io.File;
+import java.net.URL;
+
+/**
+ * @author EmmaStone
+ */
+public class JPushBullet extends Library {
+    private static boolean valid;
+
+    @Override
+    public void init() {
+        if (!hasJar()) {
+            System.err.println("Failed to load jpushbullet... [jar missing]");
+            return;
+        }
+        Core.verbose("Adding jpushbullet jar file to build path: "
+                + getJarFileURL().getPath());
+        BuildPath.add(getJarFileURL());
+
+        try {
+            Class.forName("com.shakethat.jpushbullet.net.PushbulletClient");
+            valid = true;
+        } catch (ClassNotFoundException e) {
+            System.err
+                    .println("Failed to add jpushbullet to build path, or incorrupt download");
+        }
+
+        Core.verbose("JPushBullet initialized.");
+    }
+
+    @Override
+    public boolean isAdded() {
+        return valid;
+    }
+
+    @Override
+    public File getJarFile() {
+        return new File(Directories.getCachePath(), "jpushbullet.jar");
+    }
+
+    @Override
+    public URL getDownloadLink() {
+        try {
+            return new URL("https://github.com/silk8192/jpushbullet/releases/download/1.0/jpushbullet-1.0.jar");
+        } catch (Throwable t) {
+            t.printStackTrace();
+        }
+        return null;
+    }
+
+    @Override
+    public boolean requiresJar() {
+        return false;
+    }
+
+    @Override
+    public String getLibraryName() {
+        return "JPushBullet";
+    }
+
+    public static boolean isValid() {
+        return valid;
+    }
+}