package.json: update node-i2c

Author: Jason Kridner

package.json

@@ -35,7 +35,7 @@
   "optionalDependencies": {
     "fibers": "1.0.1",
     "serialport": "1.2.5",
-    "i2c": "0.1.4",
+    "i2c": "0.1.8",
     "epoll": "0.0.7"
   },
   "devDependencies": {