chore(package): update lerna-changelog to version 0.6.0 (#231)

Author: greenkeeper[bot]

package.json

@@ -62,7 +62,7 @@
     "istanbul-combine": "^0.3.0",
     "js-yaml": "^3.8.2",
     "lerna": "^2.0.0-beta.38",
-    "lerna-changelog": "^0.5.0",
+    "lerna-changelog": "^0.6.0",
     "live-server": "^1.2.0",
     "marked": "^0.3.6",
     "metalsmith": "^2.3.0",