Replace removed fs-extra.walkSync with klaw-sync.

Author: rottmann

package.json

@@ -1,6 +1,6 @@
 {
   "name": "apidoc-core",
-  "version": "0.8.0",
+  "version": "0.8.1",
   "description": "Core parser library to generate apidoc result following the apidoc-spec",
   "author": "Peter Rottmann <rottmann@inveris.de>",
   "license": "MIT",
@@ -30,9 +30,10 @@
     "node": ">= 0.10.0"
   },
   "dependencies": {
-    "fs-extra": "^1.0.0",
+    "fs-extra": "^2.0.0",
     "glob": "^7.1.1",
     "iconv-lite": "^0.4.15",
+    "klaw-sync": "^1.0.2",
     "lodash": "~4.17.4",
     "semver": "~5.3.0"
   },