Updated initial_setup script to install new libraries and the nokogiri gem ahead of the bundle install to speed up overall initial installation time

Author: jasbur

initial_setup.py

@@ -10,8 +10,9 @@ def install_prereqs():
 	print("Updating Apt...")
 	os.system('apt update')
 	print("Installing prerequisites via Apt...")
-	os.system('apt install python3 bundler libsqlite3-dev isc-dhcp-server hostapd -y')
+	os.system('apt install python3 bundler libsqlite3-dev isc-dhcp-server hostapd libxml2-dev libxslt-dev -y')
 	print("Installing necessary Ruby Gems. This can take a few minutes...")
+	os.system('gem install nokogiri --no-document -v 1.6.6.2 -- --use-system-libraries')
 	os.system('bundle install --gemfile=' + project_path + '/Configuration\ App/Gemfile')
 
 def update_config_paths():