ExVersions

Updates your README.md with version credentials of all your (specified) external dependencies.

Installation

1. Add ex_versions to your list of dependencies in mix.exs:

```elixir
def deps do
  [{:ex_versions, "~> 0.0.1"}]
end
```

1. Ensure ex_versions is started before your application:

```elixir
def application do
  [applications: [:ex_versions]]
end
```

Usage

Within your apps start function, such as in lib/my_app.ex for Phoenix apps, add:

# For each tuple:
## - First argument is the desired title for the dependency.
## - Second argument is the bash command for the version of the dependency.
ExVersions.watch [
                    {"Elixir", "elixir -v"},
                    {"Phoenix", "mix phoenix.new -v"},
                    {"Postgresql", "pg_config --version"},
                    {"npm", "npm -v"},
                    {"Node", "node -v"}
                 ]

in your README.md where you'd like the dependency version to be placed. Make sure no characters follow<!– ex_versions –>. ## Example <!-- ex_versions --> below and running the watch function example from above.

Dependency Versions:

Elixir:

$ elixir -v

Erlang/OTP 19 [erts-8.0.1] [source] [64-bit] [smp:4:4] [async-threads:10] [hipe] [kernel-poll:false] [dtrace]

Elixir 1.3.1

Node:

$ node -v

v6.1.0

npm:

$ npm -v

3.10.3

Phoenix:

$ mix phoenix.new -v

Phoenix v1.2.0

Postgresql:

$ pg_config --version

PostgreSQL 9.4.4