Example merge3

#!/usr/bin/env ruby

require 'merge3'

ORIGINAL = <<EOF
Hello World

Foo Bar
EOF

USER = <<EOF
Hello World

(User) Garden Hose
Foo Bar

(User) Baz Dog
EOF

UPDATED = <<EOF
Hello World

Foo Bark
(Updated) Apples and oranges
EOF

puts Merge3::three_way(ORIGINAL, USER, UPDATED)

# Expecting:
EXPECTED = <<EOF
Hello World

(User) Garden Hose
Foo Bark
(Updated) Apples and oranges

(User) Baz Dog
EOF