Make VS2017 version of the AutoIt extension

Author: Therena

AutoItSyntaxHighlight/source.extension.vsixmanifest

@@ -10,9 +10,9 @@
         <Tags>Syntax, Highlight, Script, AutoIt, Language</Tags>
     </Metadata>
     <Installation>
-        <InstallationTarget Version="[14.0,16.0)" Id="Microsoft.VisualStudio.Community" />
-        <InstallationTarget Version="[14.0,16.0)" Id="Microsoft.VisualStudio.Pro" />
-        <InstallationTarget Version="[14.0,16.0)" Id="Microsoft.VisualStudio.Enterprise" />
+        <InstallationTarget Version="[15.0,16.0)" Id="Microsoft.VisualStudio.Community" />
+        <InstallationTarget Version="[15.0,16.0)" Id="Microsoft.VisualStudio.Pro" />
+        <InstallationTarget Version="[15.0,16.0)" Id="Microsoft.VisualStudio.Enterprise" />
     </Installation>
     <Dependencies>
         <Dependency Id="Microsoft.Framework.NDP" DisplayName="Microsoft .NET Framework" d:Source="Manual" Version="[4.5,)" />