Red
===

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Persists relations between entities in Redis.

## Examples of what can be done now with `Red`

```elixir
# gets all users followed by user 42
"user#42"
|> Red.relation(:follow, :out)
|> Enum.to_list

# gets all users that follow user 42
"user#42"
|> Red.relation(:follow, :in)
|> Enum.to_list

# limits and offsets
"user#42"
|> Red.relation(:follow) # default is :out
|> Red.offset(2)
|> Red.limit(3)
|> Enum.to_list

# creates edge (user#42–> :follow –> user#21)
"user#42"
|> Red.relation(:follow)
|> Red.add!("user#21")

# creates multiple edges from user#42
"user#42"
|> Red.relation(:follow)
|> Red.add!(["user#21", "user#12", "user#15"])
```