Add README.md and scriptmanager command line tool

Author: Amin Rostami

README.md

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+# Linux Script Manager
+    - Don't keep your bash scripts in a repository?😱
+    - Do it with my-script-manager today!
+
+Manage your day to day or work linux bash scripts as a git repository 😍 with command line tool to auto update and sync your machine. 💘
+
+With my-script-manager you can share your scripts between your devices and with your friends and colleagues, easily setup your new devices, keep track of your scripts and never lost them again.
+
+    💌 Help this project evolve by your contributin.
+
+# Usage
+
+1. fork this repositry
+
+2. clone your respository in a nice location (ex: /opt)
+
+3. `cd {clone-location}/my-script-manager`
+
+4. load scrits: `sudo ./scriptmanager --load`
+
+5. open new terminal or logout from existing
+
+6. add your scripts in project root directory (see: example), don't forget `sudo chmod +x your-new-script`
+
+7. push your changes
+
+8. sync scripts: `scriptmanager --sync`
+
+9. [optional] add --sync cronjob: `scriptmanager --cron`
+
+10. access and use your scripts from any machine just by clone it in seconds!
+
+11. enjoy your nice scripts!

examplescript

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+#!/bin/bash
+
+echo "hi, i am manage happily by linux script manager"

scriptmanager

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+#!/bin/bash
+
+
+script_dir="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+
+
+if [[ $1 == '--load' ]] ; then
+
+    if [ "$EUID" -ne 0 ] ; then
+        echo "Please run --load command as root"
+        exit
+    fi
+    USER_HOME=$(getent passwd "$SUDO_USER" | cut -d : -f 6)
+    file_path="$USER_HOME/.bashrc"
+    echo "add scripts to PATH in $file_path"
+    cat >> $file_path <<- EOM
+export PATH="$script_dir:\$PATH" # add my-script-manager scripts
+EOM
+
+    exit 1
+fi
+
+
+if [[ $1 == '--sync' ]] ; then
+    echo "sync scripts..."
+    cd $script_dir
+    git pull
+    exit 1
+fi
+
+
+if [[ $1 == '--cron' ]] ; then
+    echo "add my-script-manager --sync cronjob..."
+    croncmd="$script_dir/scriptmanager --sync > $script_dir/sync-log.out 2>&1"
+    cronjob="*/5 * * * * $croncmd" # each 5 minutes
+    ( crontab -l | grep -v -F "$croncmd" ; echo "$cronjob" ) | crontab -
+    exit 1
+fi
+
+
+echo "Script Manager v0.1
+
+Usage:
+	scriptmanager [COMMAND]
+
+Commands:
+	--sync: pull from origin and sync scripts
+	--load: init my-script-manager and add scripts to PATH (use .profile)
+	--cron: add cronjob to --sync each 5 minutes
+	--help: show this message
+"