- include commons-httpclient into demo deps

bbb-api-demo/build.gradle

@@ -21,4 +21,5 @@ dependencies {
 	  compile group: 'commons-codec', name: 'commons-codec', version: '1.4'
 	  compile group: 'commons-fileupload', name: 'commons-fileupload', version: '1.2'
 	  compile group: 'commons-io', name: 'commons-io', version: '2.0'
+	  compile group: 'commons-httpclient', name: 'commons-httpclient', version: '3.1'
 }