Error in aurelia.json result in verbose and unreliable error message

**I'm submitting a bug report**

* **Library Version:**
0.27.0

**Please tell us about your environment:**
* **Operating System:**
Windows 8.1

* **Node Version:**
6.10.0

* **NPM Version:**
3.10.10

**Current behavior:**
If any error in aurelia.json (or a dependency missing package.json), error message is too verbose, yet misses the most essential information : what line in aurelia.json caused the error ?

**Expected/desired behavior:**
First tell us what line in aurelia.json caused the error, then possibly add a concise explanation.

* **What is the motivation / use case for changing the behavior?**
Current behavior is pointless and time-consuming for users who attempt to (identify and then) correct the error.