Update the readme documentation

[0x1eef]

Fix for #105 (comment)

[pdobb]

I like this but would recommend providing instructions for pre Pry v0.12.0 as well:

# For Pry v0.12.0+
if Pry::Prompt[:rails]
  Pry.prompt = Pry::Prompt["rails"][:value]
end

# For Pry < v0.12.0
if defined?(PryRails::Prompt)
  Pry.config.prompt = Pry::Prompt::MAP["rails"][:value]
end

[0x1eef]

i'm not sure it makes sense to provide documentation for an older API that pry-rails no longer implements.

[pdobb]

Just in case this got missed in force push:

I like this but would recommend providing instructions for pre Pry v0.12.0 as well:

# For Pry v0.12.0+
if Pry::Prompt[:rails]
  Pry.prompt = Pry::Prompt["rails"][:value]
end

# For Pry < v0.12.0
if defined?(PryRails::Prompt)
  Pry.config.prompt = Pry::Prompt::MAP["rails"][:value]
end

[0x1eef]

@pdobb i pushed again.

[pdobb]

Thanks very much! I was making a PR to help, but you were so fast! 👍

[0x1eef]

thanks :)

[0x1eef]

@kyrylo @rf- can you review please?