message: Use correct field name for build script
diff: @@ -13,7 +13,7 @@ install:
  - cargo install mdbook --vers "^0.1.3" # https://github.com/rust-lang-nursery/mdBook#installation
  - cargo build --verbose # https://docs.travis-ci.com/user/languages/rust/#Dependency-Management
  -build:
  +script:
  - cargo build --verbose --all # https://docs.travis-ci.com/user/languages/rust/#Default-Build-Script
  - cargo test --verbose --all # https://docs.travis-ci.com/user/languages/rust/#Default-Build-Script
  - mdbook build book
  