Update for Shrine 1.1

We add `#stream` for streaming download. We also add a Shrine dependency
because just in case Shrine 2.0 breaks some backwards compatibility for
shrine-fog. We also require "shrine" for consistency with other
storages. We also don't need to rewind the file anymore.

lib/shrine/storage/fog.rb

@@ -1,3 +1,4 @@
+require "shrine"
 require "down"
 require "uri"
 
@@ -26,6 +27,10 @@ def download(id)
         Down.download(url(id))
       end
 
+      def stream(id)
+        get(id) { |chunk| yield chunk }
+      end
+
       def open(id)
         download(id)
       end
@@ -64,8 +69,8 @@ def file(id)
         directory.files.new(key: path(id))
       end
 
-      def get(id)
-        directory.files.get(path(id))
+      def get(id, &block)
+        directory.files.get(path(id), &block)
       end
 
       def head(id)
@@ -91,7 +96,6 @@ def put(io, id, metadata = {})
         options[:content_type] = metadata["mime_type"]
 
         directory.files.create(options)
-        io.rewind
       end
 
       def copy(io, id, metadata = {})

shrine-fog.gemspec

@@ -1,6 +1,6 @@
 Gem::Specification.new do |gem|
   gem.name         = "shrine-fog"
-  gem.version      = "0.1.1"
+  gem.version      = "0.2.0"
 
   gem.required_ruby_version = ">= 2.1"
 
@@ -14,12 +14,12 @@ Gem::Specification.new do |gem|
   gem.files        = Dir["README.md", "LICENSE.txt", "lib/**/*.rb", "shrine-fog.gemspec"]
   gem.require_path = "lib"
 
-  gem.add_development_dependency "down", ">= 1.0.3"
+  gem.add_dependency "shrine", "~> 1.1"
+  gem.add_dependency "down", ">= 1.0.5"
 
   gem.add_development_dependency "rake"
   gem.add_development_dependency "fog-aws"
   gem.add_development_dependency "mime-types"
   gem.add_development_dependency "dotenv"
-  gem.add_development_dependency "shrine"
   gem.add_development_dependency "minitest", "~> 5.8"
 end