Improve release script and update documentation

README.md

@@ -301,12 +301,9 @@ to the client API, please see
 ## Requirements  ##
 
 This code requires PHP 5.3 or greater. Older versions of PHP are not
-supported.
+supported. This library works and is tested with HHVM.
 
-This library works and is tested with HHVM.
-
-This library also relies on the [Guzzle3 HTTP client](https://github.com/guzzle/guzzle3)
-and the [MaxMind DB Reader](https://github.com/maxmind/MaxMind-DB-Reader-php).
+This library also relies on the [MaxMind DB Reader](https://github.com/maxmind/MaxMind-DB-Reader-php).
 
 If you are using PHP 5.3 with an autoloader besides Composer, you must load
 `JsonSerializable.php` in the `compat` directory.

dev-bin/release.sh

@@ -2,12 +2,16 @@
 
 set -e
 
-TAG=$1
+VERSION=$(perl -MFile::Slurp::Tiny=read_file -MDateTime <<EOF
+use v5.16;
+my \$log = read_file(q{CHANGELOG.md});
+\$log =~ /\n(\d+\.\d+\.\d+) \((\d{4}-\d{2}-\d{2})\)\n/;
+die 'Release time is not today!' unless DateTime->now->ymd eq \$2;
+say \$1;
+EOF
+)
 
-if [ -z $TAG ]; then
-    echo "Please specify a tag"
-    exit 1
-fi
+TAG="v$VERSION"
 
 if [ -f geoip2.phar ]; then
     rm geoip2.phar
@@ -25,6 +29,8 @@ fi
 php composer.phar self-update
 php composer.phar update --no-dev
 
+perl -pi -e "s/(?<=const VERSION = ').+?(?=';)/$TAG/g" src/WebService/Client.php
+
 if [ ! -f box.phar ]; then
     wget -O box.phar "https://github.com/box-project/box2/releases/download/2.5.0/box-2.5.0.phar"
 fi

src/WebService/Client.php

@@ -48,7 +48,6 @@ class Client implements ProviderInterface
     private $client;
     private static $basePath = '/geoip/v2.1';
 
-    // XXX - don't merge until release script automatically updates this
     const VERSION = 'v2.2.0-alpha';
 
     /**
@@ -62,10 +61,6 @@ class Client implements ProviderInterface
      *      * `host` - The host to use when querying the web service.
      *      * `timeout` - Timeout in seconds.
      *      * `connectTimeout` - Initial connection timeout in seconds.
-     * @param object $guzzleClient Optional Guzzle client to use (to facilitate
-     * unit testing).
-     * @param string $timeout Total transaction timeout in seconds
-     * @param string $connectTimeout Initial connection timeout in seconds
      */
     public function __construct(
         $userId,