clients want bws version for logging and debugging

lib/expressapp.js

@@ -415,6 +415,12 @@ ExpressApp.prototype.start = function(opts, cb) {
     });
   });
 
+  router.get('/v1/version/', function(req, res) {
+    var server = getServer(req, res);
+    res.json( { version: server.version } );
+    res.end();
+  });
+
   this.app.use(opts.basePath || '/bws/api', router);
 
   WalletService.initialize(opts, cb);

lib/server.js

@@ -15,6 +15,7 @@ var Address = Bitcore.Address;
 
 var ClientError = require('./errors/clienterror');
 var Errors = require('./errors/errordefinitions');
+var Package = require('../package');
 
 var Utils = require('./utils');
 var Lock = require('./lock');
@@ -49,6 +50,7 @@ function WalletService() {
   this.blockchainExplorerOpts = blockchainExplorerOpts;
   this.messageBroker = messageBroker;
   this.notifyTicker = 0;
+  this.version = Package.version;
 };