Convert IOBIO Webservice API requests to a number of endpoints

[chmille4]

Currently the iobio webservices are called directly in the function. e.g.

var cmd = new iobio.cmd(
            IOBIO.tabix,
            ['-H', vcfURL],
            {ssl: useSSL}
        );

        cmd.on('data', function(data) {
          if (data != undefined) {
            success = true;
            buffer += data;
          }
        });
 ...

Abstract away all iobio commands into endpoint so the above would become something like this

routes.getHeader({onData:Func(), onError:Func()})

I think this could all be placed in a routes directory with a vcf and bam routes file.

The purpose of this is to decouple the API from the gene.iobio code so that we can experiment with monolith and http endpoints

Thoughts?