Added a basic release script

.gitignore

@@ -1,6 +1,5 @@
 _site
 .gh-pages
-bin/
 composer.lock
 composer.phar
 phpunit.xml

bin/release.sh

@@ -0,0 +1,47 @@
+#!/bin/bash
+
+TAG=$1
+
+if [ -z $TAG ]; then
+    echo "Please specify a tag"
+    exit 1
+fi
+
+if [ -n "$(git status --porcelain)" ]; then
+    echo ". is not clean." >&2
+    exit 1
+fi
+
+if [ ! -d .gh-pages ]; then
+    echo "Checking out gh-pages in .gh-pages"
+    git clone -b gh-pages git@git.maxmind.com:GeoIP2-php .gh-pages
+    cd .gh-pages
+else
+    echo "Updating .ghpages"
+    cd .gh-pages
+    git pull
+fi
+
+if [ -n "$(git status --porcelain)" ]; then
+    echo ".gh-pages is not clean" >&2
+    exit 1
+fi
+
+cp ../README.md _includes/README.md
+apigen --quiet --source ../src --destination doc/$TAG
+
+git add doc/
+git commit -m "Updated for $TAG"
+
+read -e -p "Push to origin? " SHOULD_PUSH
+
+if [ "$SHOULD_PUSH" != "y" ]; then
+    echo "Aborting"
+    exit 1
+fi
+
+git push
+cd ..
+git tag $TAG
+git push
+git push --tags