message: Update README.md
  Updated readme following realisation github releases are now tied to compiler versions
diff: @@ -132,12 +132,6 @@ We recommend taking the minimal rust .travis.yml, installing the libssl-dev
  dependency tarpaulin has and then running Tarpaulin with the version of
  rustc you require.
  -The travis-install shell script will install the latest tagged release built
  -on travis to your travis instance and significantly speeds up the travis
  -builds. If you want an earlier version of tarpaulin, look at the script to
  -see what you need to implement and adjust accordingly or use
  -`cargo install cargo-tarpaulin` and specify the version in the arguments.
  -
  For codecov.io you'll need to export CODECOV_TOKEN are instructions on this in
  the settings of your codecov project.
  @@ -164,7 +158,7 @@ script:
  after_success: |
  if [[ "$TRAVIS_RUST_VERSION" == stable ]]; then
  - bash <(curl https://raw.githubusercontent.com/xd009642/tarpaulin/master/travis-install.sh)
  + `RUSTFLAGS="--cfg procmacro2_semver_exempt" cargo install cargo-tarpaulin`
  # Uncomment the following line for coveralls.io
  # cargo tarpaulin --ciserver travis-ci --coveralls $TRAVIS_JOB_ID
  @@ -174,6 +168,14 @@ after_success: |
  fi
  ```
  +Alternative, there is the travis-install shell script will install the latest tagged
  +release built on travis to your travis instance and significantly speeds up the travis
  +builds. You can install via that script using
  +`bash <(curl https://raw.githubusercontent.com/xd009642/tarpaulin/master/travis-install.sh)`.
  +**Warning** due to the proc_macro2 dependency, the github releases are now tied
  +to a specific version of rust so are no longer recommended. Instead use cargo or docker to
  +install tarpaulin.
  +
  ### Docker
  Tarpaulin has builds deployed to [docker-hub](https://hub.docker.com/r/xd009642/tarpaulin/),
  