message: Fix bad paths in Travis config
  Should address failures like this one:
diff: @@ -10,4 +10,4 @@ before_install:
  - (cd packages/graphql-language-service-utils && npm link ../graphql-language-service-types && npm install)
  - (cd packages/graphql-language-service-interface && npm link ../graphql-language-service-types && npm link ../graphql-language-service-config && npm link ../graphql-language-service-parser && npm link ../graphql-language-service-utils && npm install)
  - (cd packages/graphql-language-service-server && npm link ../graphql-language-service-types && npm link ../graphql-language-service-config && npm link ../graphql-language-service-interface && npm link ../graphql-language-service-interface && npm install)
  - - npm link && npm link packages/graphql-language-service-interface && npm link ../graphql-language-service-server && npm link ../graphql-language-service-utils
  + - npm link && npm link packages/graphql-language-service-interface && npm link packages/graphql-language-service-server && npm link packages/graphql-language-service-utils
  