pin babel, update lerna

lerna.json

@@ -1,5 +1,5 @@
 {
-  "lerna": "2.0.0-beta.38",
+  "lerna": "2.0.0-rc.5",
   "version": "7.0.0-alpha.10",
   "changelog": {
     "repo": "babel/babel",

package.json

@@ -10,13 +10,14 @@
   },
   "devDependencies": {
     "async": "^1.5.0",
-    "babel-core": "^7.0.0-alpha.9",
+    "babel-cli": "7.0.0-alpha.9",
+    "babel-core": "7.0.0-alpha.9",
     "babel-eslint": "^7.0.0",
     "babel-plugin-istanbul": "^2.0.1",
-    "babel-preset-env": "^2.0.0-alpha.7",
-    "babel-preset-flow": "^7.0.0-alpha.9",
-    "babel-preset-stage-0": "^7.0.0-alpha.9",
-    "babel-register": "^7.0.0-alpha.9",
+    "babel-preset-env": "2.0.0-alpha.7",
+    "babel-preset-flow": "7.0.0-alpha.9",
+    "babel-preset-stage-0": "7.0.0-alpha.9",
+    "babel-register": "7.0.0-alpha.9",
     "browserify": "^13.1.1",
     "bundle-collapser": "^1.2.1",
     "chai": "^3.5.0",
@@ -33,7 +34,7 @@
     "gulp-plumber": "^1.0.1",
     "gulp-util": "^3.0.7",
     "gulp-watch": "^4.3.5",
-    "lerna": "^2.0.0-beta.38",
+    "lerna": "2.0.0-rc.5",
     "lerna-changelog": "^0.2.0",
     "lodash": "^4.2.0",
     "mocha": "^3.0.0",