Add Windows install with IIS (#114)

* Windows install script

Created

* Add Windows option

* Update

* Enable ODBC

* IIS Identity and mod_lua

* Update

* Update

* Merge remote-tracking branch 'upstream/master'

# Please enter a commit message to explain why this merge is necessary,
# especially if it merges an updated upstream into a topic branch.
#
# Lines starting with '#' will be ignored, and an empty message aborts
# the commit.

* Update

* WIndows install

Works with IIS.
Need to create nginx install

README.md

@@ -39,3 +39,15 @@ CentOS operating system is a requirement for some companies. Don't expect video
 wget -O - https://raw.githubusercontent.com/fusionpbx/fusionpbx-install.sh/master/centos/pre-install.sh | sh
 cd /usr/src/fusionpbx-install.sh/centos && ./install.sh
 ```
+
+### Windows
+Don't expect everything to work. Testing is required.
+mod_lua is missing from builds after 1.6.14. Script will download it from github.
+Open PowerShell as Administrator and run commands
+
+```sh
+Set-Location "$env:PUBLIC\Downloads"
+Invoke-WebRequest https://raw.githubusercontent.com/fusionpbx/fusionpbx-install.sh/master/windows/install.ps1 -OutFile install.ps1
+#run the script
+.\install.ps1
+```