Bump and clean up dependencies

Author: miltador

package.json

@@ -31,17 +31,11 @@
     "scripts": {
         "test": "echo \"Warning: no test specified\" && exit 0"
     },
-    "devDependencies": {
-        "chai": "^3.2.0",
-        "mocha": "^2.2.5"
-    },
     "dependencies": {
-        "aws-sdk": "^2.3.19",
-        "bluebird": "^3.0.6",
-        "dynamodb-localhost": "0.0.2",
-        "dynamodb-migrations": "0.0.10",
-        "lodash": "^4.13.1",
-        "mkdirp": "^0.5.0",
-        "tar": "^2.0.0"
+        "aws-sdk": "^2.7.0",
+        "bluebird": "^3.4.6",
+        "dynamodb-localhost": "^0.0.4",
+        "dynamodb-migrations": "^0.0.10",
+        "lodash": "^4.17.0"
     }
 }