Add {import} + tests

docs/tags/import.md

@@ -4,12 +4,12 @@ Tag {import}
 Import [macro](./macro.md) from another template
 
 ```smarty
-{import 'page.macros.tpl'}
+{import 'math.tpl'}
 ```
 
 ```smarty
-{import 'listing.tpl' as listing}
+{import 'math.tpl' as math}
 ...
-{listing.paginator current=5 count=100}
+{math.plus x=5 y=100}
 ```
 

docs/tags/macro.md

@@ -1,20 +1,18 @@
 Tag {macro}
 ============
 
-Declare
+Declare macro
 
 ```smarty
-declare macros
-
-{macro paginator(current, total, skip=true)}
-    ... paginator code ...
+{macro plus(x, y, z=0)}
+    x + y + z = {$x + $y + $z}
 {/macro}
 ```
 
-Invoke
+Invoke macro
 
 ```smarty
-{paginator current=$page total=100}
+{macro.plus x=$num y=100}
 ```
 
-Use tag [{import}](./import.md) for extending macros for another templates.
+Use tag [{import}](./import.md) for importing existing macroses into another template