Update install_cmd.sh

MP1/scripts/install_cmd.sh

@@ -1,7 +1,6 @@
 rm -rf "$HOME/bin/grepp"
-chmod +x ../client.py
 mkdir -p "$HOME/bin"
 install -m 755 ../client.py "$HOME/bin/grepp"
 echo 'export PATH="$HOME/bin:$PATH"' >> "$HOME/.bashrc"
-source ~/.bashrc
 hash -r
+source "$HOME/.bashrc"