Support for Guacamole 1.1.0 Install/Upgrade + More (#97)

* Updated to handle Guacamole 1.1.0 and to include support for installed Duo.

* Fixed missing no color code.

* Added .gitattributes file and updated README.md.

* Fixed package to use FreeRDP2 variant.

* Prompt test.

* Another prompt test.

* Another prompt test.

* Another prompt test.

* Formatting.

* -For the install output Duo configuration values no matter what.
-Updated upgrade script to include missing packages.

* Added additional package to the upgrade script that may be required.

* Formatting and added missing websockets package.

* Added logic for upgrading the TOTP and Duo extensions.

* Update README.md

Changed README.md links back.

.gitattributes

@@ -0,0 +1 @@
+*.sh eol=lf