ES 2.4 require plugin-descriptor.properties

[MarynaIS]

bin/plugin install markharwood/netrisk -> Installing markharwood/netrisk... Trying https://github.com/markharwood/netrisk/archive/master.zip ... Downloading ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................DONE Verifying https://github.com/markharwood/netrisk/archive/master.zip checksums if available ... NOTE: Unable to verify checksum for downloaded plugin (unable to find .sha1 or .md5 file to verify) ERROR: Could not find plugin descriptor 'plugin-descriptor.properties' in plugin zip

There is similar issue http://stackoverflow.com/questions/33538903/elasticsearch-2-0-plugin-installation-info