Change copyright year to be current (#121)

layouts/partials/footer.html

@@ -3,7 +3,7 @@
     {{ with .Site.Params.footercontent }}
       <p>{{.}}</p>
     {{ end }}
-    {{ if not .Site.Params.hideCopyright }} © {{ .Site.LastChange.Format "2006" }}{{ end }}
+    {{ if not .Site.Params.hideCopyright }} © {{ now.Format "2006" }}{{ end }}
     {{ if not .Site.Params.hideCredits }}
       {{ if not .Site.Params.hideCopyright }} · {{ end }}
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