add forgotten abap demo to index

.gitignore

@@ -16,7 +16,8 @@
 # A handy place to put stuff that git should ignore:
 /ignore/
 node_modules/
-tool/node_modules/
+jam/
+* *
 
 .git-ref
 npm-debug.log

demo/kitchen-sink/docs/abap.abap

@@ -0,0 +1,36 @@
+***************************************
+** Program: EXAMPLE                  **
+** Author: Joe Byte, 07-Jul-2007     **
+***************************************
+ 
+REPORT BOOKINGS.
+ 
+* Read flight bookings from the database
+SELECT * FROM FLIGHTINFO
+  WHERE CLASS = 'Y'       "Y = economy
+  OR    CLASS = 'C'.      "C = business
+(...)
+
+REPORT TEST.
+WRITE 'Hello World'.
+
+USERPROMPT = 'Please double-click on a line in the output list ' &
+             'to see the complete details of the transaction.'.
+
+
+DATA LAST_EOM    TYPE D.  "last end-of-month date
+ 
+* Start from today's date
+  LAST_EOM = SY-DATUM.
+* Set characters 6 and 7 (0-relative) of the YYYYMMDD string to "01",
+* giving the first day of the current month
+  LAST_EOM+6(2) = '01'.
+* Subtract one day
+  LAST_EOM = LAST_EOM - 1.
+ 
+  WRITE: 'Last day of previous month was', LAST_EOM.
+  
+DATA : BEGIN OF I_VBRK OCCURS 0,
+         VBELN LIKE VBRK-VBELN,
+         ZUONR LIKE VBRK-ZUONR,
+       END OF I_VBRK.