update to web3js 0.18.0

Author: iurimatias

package.json

@@ -32,7 +32,7 @@
     "serve-static": "^1.11.1",
     "shelljs": "^0.5.0",
     "toposort": "^0.2.10",
-    "web3": "^0.15.0",
+    "web3": "^0.18.0",
     "wrench": "^1.5.8"
   },
   "author": "Iuri Matias <[email protected]>",