diff --git a/README.md b/README.md
index bb96600..d4ae158 100644
--- a/README.md
+++ b/README.md
@@ -7,22 +7,7 @@ database, the door unlocks.
 It's primarily intended for Raspberry Pi, but can work for other plaforms that
 can work with libnfc (including common x86 systems).
 
-## Aims
-
-People have made few implementations that kind of work
-[1](https://www.brmlab.cz/project/brmdoor),
-[2](https://github.com/hiviah/brmdoor-pn532/tree/pn532), but are
-messy - either due to limitations of hardware or plagued by having to simulate
-backward compatbility errors.
-
-So we need and have:
-
-  - clean, documented C++ code and swig wrapper interfacing libnfc directly
-  - clean, documented Python code
-  - documentation (doxygen)
-  - sqlite support - no need to recompile for access control list change, just
-    edit the sqlite database
-  - extensibility
+Info about authorized users and their cards and keys is stored in sqlite database.
 
 ## Building
 
@@ -30,6 +15,7 @@ You need just to run `make`. Additional dependencies:
 
 - [SWIG](http://www.swig.org/)
 - [WiringPi2 pythonic binding](https://github.com/WiringPi/WiringPi2-Python) (for switching lock on Raspberry)
+- you may have to change `python2.7-config` to `python-config` on some older systems in Makefile
 
 ## Howto
 
@@ -39,20 +25,24 @@ You need just to run `make`. Additional dependencies:
 
 2. Copy sample config file, edit your pins, DB file location, timeouts
 
-        cp brmdoor_nfc.config.sample brmdoor.config
+        cp brmdoor_nfc.config.sample brmdoor_nfc.config
 
 3. Add some users
 
   - either authenthication by UID, e.g.:
 
-        brmdoor_adduser.py -c brmdoor.config -a uid 34795FCC SomeUserName
+        brmdoor_adduser.py -c brmdoor_nfc.config -a uid 34795FCC SomeUserName
 
   - authenthication by Yubikey's HMAC-SHA1 programmed on slot 2
 
-        brmdoor_adduser.py -c brmdoor.config -a hmac 40795FCCAB0701 SomeUserName 000102030405060708090a0b0c0d0e0f31323334
+        brmdoor_adduser.py -c brmdoor_nfc.config -a hmac 40795FCCAB0701 SomeUserName 000102030405060708090a0b0c0d0e0f31323334
+
+  - to program Yubikey slot 2 to use HMAC with given key, use:
+
+        ykpersonalize -2 -ochal-resp -ohmac-sha1 -ohmac-lt64 -oserial-api-visible
 
 Finally, run the daemon:
 
-        python brmdoor_nfc_daemon.py brmdoor.config
+        python brmdoor_nfc_daemon.py brmdoor_nfc.config