move install files into bin folder

diff --git a/install/wallabag_compatibility_test.php b/bin/compatibility.php
similarity index 100%
rename from install/wallabag_compatibility_test.php
rename to bin/compatibility.php

diff --git a/install/index.php b/bin/install.php
similarity index 100%
rename from install/index.php
rename to bin/install.php

diff --git a/install/mysql.sql b/bin/mysql.sql
similarity index 100%
rename from install/mysql.sql
rename to bin/mysql.sql

diff --git a/install/poche.sqlite b/bin/poche.sqlite
similarity index 100%
rename from install/poche.sqlite
rename to bin/poche.sqlite

diff --git a/install/postgres.sql b/bin/postgres.sql
similarity index 100%
rename from install/postgres.sql
rename to bin/postgres.sql