Revert "fix(lerna3): ignore npmrc (#1198)"

This reverts commit 3c4deb7.

.travis/before_install.sh

@@ -21,9 +21,6 @@ if [ "${TRAVIS_REPO_SLUG}" == "${TRIGGER_REPO_SLUG}" -a "$TRAVIS_BRANCH" == "${T
 
   npm config set "//registry.npmjs.org/:_authToken=${NPM_TOKEN}" -q
   echo "//registry.npmjs.org/:_authToken=${NPM_TOKEN}" > ~/.npmrc
-  git add ~/.npmrc
-  git update-index --assume-unchanged ~/.npmrc
-
   npm prune
 
   git config --global user.email ${COMMIT_AUTHOR_EMAIL}

package.json

@@ -79,7 +79,7 @@
     "coveralls": "cat ./coverage/lcov.info | ./node_modules/coveralls/bin/coveralls.js",
     "generate": "yarn plop",
     "lerna": "lerna",
-    "lerna:publish": "lerna publish --yes --npm-client npm",
+    "lerna:publish": "lerna publish --yes",
     "lerna:changelog": "lerna-changelog --from=`git rev-list --max-parents=0 HEAD` > CHANGELOG.md && git add CHANGELOG.md",
     "lint": "lerna run lint --parallel",
     "lint:fix": "lerna run lint:fix --parallel",