CHANGELOG, README update

Added check if mysql-client (mysql,mysqldump) is installed

Author: williamdes

CHANGELOG.md

@@ -5,6 +5,9 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
 
 ## [Unreleased]
+### Added
+- Check if mysql and mysqldump are installed
+
 
 ## [1.0.0] - 2018-04-07
 ### Added

README.md

@@ -1,4 +1,6 @@
 # sql-backup
+[![Maintainability](https://api.codeclimate.com/v1/badges/9af0b964df176436608d/maintainability)](https://codeclimate.com/github/williamdes/sql-backup/maintainability)
+
 Backup your MySQL server ( data, users, grants, views, triggers, routines, events )
 
 ## Install

backup.sh

@@ -8,6 +8,16 @@ set +o allexport
 eval "$DOTENV_SHELL_LOADER_SAVED_OPTS"
 unset DOTENV_SHELL_LOADER_SAVED_OPTS
 
+if ! [ -x "$(command -v mysql)" ]; then
+  echo 'Error: mysql is not installed !, apt-get install -y mysql-client' >&2
+  exit 1
+fi
+
+if ! [ -x "$(command -v mysqldump)" ]; then
+  echo 'Error: mysqldump is not installed !, apt-get install -y mysql-client' >&2
+  exit 1
+fi
+
 if [ -z "${BACKUP_DIR}" ]; then
     echo "Empty Variable BACKUP_DIR"
     exit 1