shrev 0.5.0

Event handler, meant to be used with `specs`.
Documentation 
sudo: false
language: rust
rust:
- nightly
- beta
- stable
matrix:
  allow_failures:
  - rust: nightly
before_script:
- |
  pip install 'travis-cargo<0.2' --user &&
  export PATH=$HOME/.local/bin:$PATH
script:
- |
  travis-cargo build &&
  travis-cargo test -- --all &&
  travis-cargo bench &&
  travis-cargo --only stable doc
cache: cargo
env:
  global:
  - TRAVIS_CARGO_NIGHTLY_FEATURE=""
#after_success:
#- travis-cargo --only stable doc-upload