Added REST API for delete repositories

Author: JRoyg

api/src/main/java/com/jfrog/bintray/client/api/handle/RepositoryHandle.java

@@ -26,6 +26,8 @@ public interface RepositoryHandle extends Handle<Repository> {
 
     AttributesSearchQuery searchForPackage();
 
+    RepositoryHandle delete() throws BintrayCallException;
+
     boolean exists() throws BintrayCallException;
 
     String getRepositoryUri();

impl/src/main/java/com/jfrog/bintray/client/impl/handle/RepositoryHandleImpl.java

@@ -95,6 +95,12 @@ public AttributesSearchQuery searchForPackage() {
         return new AttributesSearchQueryImpl(this);
     }
 
+    @Override
+    public RepositoryHandle delete() throws BintrayCallException {
+        bintrayHandle.delete(getRepositoryUri(), null);
+        return this;
+    }
+
     @Override
     public String name() {
         return name;