update v 1.0.7.5

vendor/maxmind-db/reader/.travis-install-prereqs.sh

@@ -0,0 +1,18 @@
+#!/bin/sh
+
+set -e
+set -x
+
+git submodule update --init --recursive
+composer self-update
+composer install --dev -n --prefer-source
+if [ "hhvm" != "$TRAVIS_PHP_VERSION" ]
+then
+  mkdir -p "$HOME/libmaxminddb"
+  git clone --recursive git://github.com/maxmind/libmaxminddb
+  cd libmaxminddb
+  ./bootstrap
+  ./configure --prefix="$HOME/libmaxminddb"
+  make
+  make install
+fi