Update camelcase, chokidar, and json5

Closes GH-19.

Author: wooorm

package.json

@@ -21,10 +21,10 @@
     "lib/"
   ],
   "dependencies": {
-    "camelcase": "^4.0.0",
+    "camelcase": "^5.0.0",
     "chalk": "^2.0.0",
-    "chokidar": "^1.5.1",
-    "json5": "^0.5.1",
+    "chokidar": "^2.0.0",
+    "json5": "^1.0.0",
     "minimist": "^1.2.0",
     "text-table": "^0.2.0",
     "unified-engine": "^5.1.0"

test/index.js

@@ -301,8 +301,7 @@ test('unified-args', function (t) {
 
         st.equal(
           stderr.slice(0, stderr.indexOf(' in ')),
-          'Error: Cannot parse `foo:bar` as JSON: Unexpected \'b\' at line 1 ' +
-          'column 7 of the JSON5 data. Still to read: "bar}"',
+          'Error: Cannot parse `foo:bar` as JSON: JSON5: invalid character \'b\' at 1:6',
           'should report'
         );
       });
@@ -392,8 +391,7 @@ test('unified-args', function (t) {
 
         st.equal(
           stderr.slice(0, stderr.indexOf(' in ')),
-          'Error: Cannot parse `foo:bar` as JSON: Unexpected \'b\' at line 1 ' +
-          'column 7 of the JSON5 data. Still to read: "bar}"',
+          'Error: Cannot parse `foo:bar` as JSON: JSON5: invalid character \'b\' at 1:6',
           'should report'
         );
       });