Add trimming at the beginning of a text

Change-Id: I0efec3a718e87be747a6eb09b9890c354f99eb6f
diff --git a/src/tokenizer.xfst b/src/tokenizer.xfst
index 1602d78..0d703a3 100644
--- a/src/tokenizer.xfst
+++ b/src/tokenizer.xfst
@@ -223,6 +223,7 @@
   [Streetname|Omission|Emdash] @-> ... NLout
   ]
 .o. [[WS|NL]+ @-> 0 || NLout _ ]
+.o. [[WS|NL]+ @-> 0 || .#. _ ]
 ;
 
 echo - Introduce Sentence splitter