short-phrase translation; added Swe; started doc in Phrasebook

examples/phrasebook/PhrasebookSwe.gf

@@ -0,0 +1,14 @@
+--# -path=.:present
+
+concrete PhrasebookSwe of Phrasebook = 
+  GreetingsSwe,
+  WordsSwe ** open 
+    SyntaxSwe,
+    Prelude in {
+
+lin
+  PSentence s = mkText s | lin Text (mkUtt s) ;  -- optional .
+  PQuestion s = mkText s | lin Text (mkUtt s) ;  -- optional ?
+  PGreeting g = mkPhrase g ;
+
+}