readme: add newlines

Some Markdown parsers requires a new line after header.

1 files changed, 31 insertions, 14 deletions

diff --git a/README.md b/README.md
index de36a33..9d26607 100644
--- a/README.md
+++ b/README.md
@@ -5,27 +5,34 @@ WARNING: Plum is currently under heavy development. You *will* encounter bugs wh
 
 [![Circle CI](https://circleci.com/gh/rhenium/plum.svg?style=svg)](https://circleci.com/gh/rhenium/plum) [![Build Status](https://travis-ci.org/rhenium/plum.png?branch=master)](https://travis-ci.org/rhenium/plum) [![Code Climate](https://codeclimate.com/github/rhenium/plum/badges/gpa.svg)](https://codeclimate.com/github/rhenium/plum) [![Test Coverage](https://codeclimate.com/github/rhenium/plum/badges/coverage.svg)](https://codeclimate.com/github/rhenium/plum/coverage)
 
+
 ## Requirements
+
 * Ruby 2.3
 * OpenSSL 1.0.2 or newer (HTTP/2 requires ALPN)
 * Optional:
   * [http_parser.rb gem](https://rubygems.org/gems/http_parser.rb) (HTTP/1.x parser; if you use "http" URI scheme)
   * [rack gem](https://rubygems.org/gems/rack) (if you use Plum as Rack server)
 
+
 ## Installation
-```sh
+
+~~~sh
 gem install plum
-```
+~~~
+
 
 ## Usage
+
 * Documentation: http://www.rubydoc.info/gems/plum
 * Some examples are in `examples/`
 
+
 ### As a Rack-compatible server
 
 Most existing Rack-based applications should work without modification.
 
-```ruby
+~~~ruby
 # config.ru
 App = -> env {
   [
@@ -36,20 +43,21 @@ App = -> env {
 }
 
 run App
-```
+~~~
 
 You can run it:
 
-```sh
+~~~sh
 % plum -e production -p 8080 --https --cert server.crt --key server.key config.ru
-```
+~~~
 
 NOTE: If `--cert` and `--key` are omitted, a temporary dummy certificate will be generated.
 
+
 ### As a HTTP/2 (HTTP/1.x) client library
 If the server does't support HTTP/2, `Plum::Client` tries to use HTTP/1.x instead.
 
-```
+~~~
    +-----------------+
    |:https option    | false
    |(default: true)  |-------> Try Upgrade from HTTP/1.1
@@ -63,10 +71,12 @@ If the server does't support HTTP/2, `Plum::Client` tries to use HTTP/1.x instea
             | "h2"
             v
           HTTP/2
-```
+~~~
+
 
 ##### Sequential request
-```ruby
+
+~~~ruby
 client = Plum::Client.start("http2.rhe.jp", user_agent: "nyaan")
 res1 = client.get("/", headers: { "accept" => "*/*" }).join
 puts res1.body # => "..."
@@ -74,10 +84,12 @@ res2 = client.post("/post", "data").join
 puts res2.body # => "..."
 
 client.close
-```
+~~~
+
 
 ##### Parallel request
-```ruby
+
+~~~ruby
 res1 = res2 = nil
 Plum::Client.start("rhe.jp", 443, http2_settings: { max_frame_size: 32768 }) { |client|
   res1 = client.get("/")
@@ -86,10 +98,12 @@ Plum::Client.start("rhe.jp", 443, http2_settings: { max_frame_size: 32768 }) { |
 } # wait for response(s) and close
 
 p res1.status # => "200"
-```
+~~~
+
 
 ##### Download a large file
-```ruby
+
+~~~ruby
 Plum::Client.start("http2.rhe.jp", 443, hostname: "assets.rhe.jp") { |client|
   client.get("/large") do |res| # called when received response headers
     p res.status # => "200"
@@ -100,9 +114,11 @@ Plum::Client.start("http2.rhe.jp", 443, hostname: "assets.rhe.jp") { |client|
     }
   end
 }
-```
+~~~
+
 
 ## TODO
+
 * **Better API**
 * Plum::Client
   * PING frame handling
@@ -110,5 +126,6 @@ Plum::Client.start("http2.rhe.jp", 443, hostname: "assets.rhe.jp") { |client|
   * Stream Priority support
   * Better HTTP/1.x support
 
+
 ## License
 MIT License