avro_turf issue 54 - ruby 2.2.6, rails 4.2.7.1

order.avsc

{
  "name": "order",
  "type": "record",
  "fields": [
    {
      "name": { "type": "string" }
    }
  ]
}

rais_console.txt

Loading development environment (Rails 4.2.7.1)
[1] pry(main)> require "avro_turf"
=> true

[2] pry(main)> avro = AvroTurf.new(schemas_path: "#{Rails.root}/app/schemas/")
=> #<AvroTurf:0x000000138eb508 @codec=nil, @namespace=nil, @schema_store=#<AvroTurf::SchemaStore:0x000000138eb490 @path="/vagrant/app/schemas/", @schemas={}>>

[3] pry(main)> avro.encode({ "name" => "jaime" }, schema_name: "order")
Avro::UnknownSchemaError: nil is not a schema we know about.
from /home/vagrant/.rvm/gems/ruby-2.2.6/gems/avro-1.8.1/lib/avro/schema.rb:89:in `real_parse'

[4] pry(main)> avro.encode({ "name" => "jaime" }, schema_name: "order")
NoMethodError: undefined method `map' for nil:NilClass
from /home/vagrant/.rvm/gems/ruby-2.2.6/gems/avro-1.8.1/lib/avro/schema.rb:247:in `to_avro'