Fix #180: Enable profile loading by default

This change sets the default value of the powershell.enableProfileLoading
to true by default.  It was confusing to users to have it disabled in the
debut release of the feature.

Author: daviwil

package.json

@@ -242,7 +242,7 @@
                 },
                 "powershell.enableProfileLoading": {
                     "type": "boolean",
-                    "default": false,
+                    "default": true,
                     "description": "If true, causes user and system wide profiles (profile.ps1 and Microsoft.VSCode_profile.ps1) to be loaded into the PowerShell session.  This affects IntelliSense and interactive script execution.  The debugger is not affected by this setting."
                 },
                 "powershell.scriptAnalysis.enable": {