update README.md

-# ldapscan 
+# ldapscan
 
 
-# summary
+This is some python code to scan and visualize an ldap tree structure.
 
 
-This is some python code to scan and visualize an ldap tree structure.
+## Synopsis
+
+    ldaptree.py ARGUMENT... [OPTION]...
+
+    LdapService.py ARGUMENT... [OPTION]... bindip bindport
+
+## Description
+
+Create a tree representation of all DNs starting with a given base DN.
+
+There are two programs:
+
+ *    ``ldaptree.py`` : commandline tool
+ * ``LdapService.py`` : web service via internal web server
+
+### ldaptree.py
+
+Supports simple and kerberos binds via GSSAPI.
+
+If no password OPTION is given for simple binds the password will be asked
+interactive.
+
+If no outfile the given the result will be written to stdout.
+
+#### ARGUMENTS
+
+ * ``-H URI, --hosturi=URI`` : LDAP URI
+ *    ``-D DN, --binddn=DN`` : The DN to use for the LDAP bind.
+ *    ``-b DN, --basedn=DN`` : The DN to start the tree with.
+
+##### LDAP URI (``-H URI, --hosturi=URI``)
+
+The URI to the ldap server to query in the form:
+
+    ldap[s]://host.uri[:port]
+
+#### OPTIONS
+
+ *                       ``-h, --help`` : Online Help
+ * ``-p PASSWORD, --password=PASSWORD`` : The password for the LDAP bind.
+ *  ``-o FILENAME, --outfile=FILENAME`` : File to write the result to.
+ *                   ``-k, --kerberos`` : Use gssapi auth.
+
+### LdapService.py
+
+Start a webserver on the given ``bindip`` and ``bindport``. On the page a tree
+representation of all DNs starting with a given base DN is visualized.
+
+Only simple binds to the directory with DN and password are supported.
+
+#### ARGUMENTS
+
+ *            ``-H URI, --hosturi=URI`` : LDAP URI
+ *               ``-D DN, --binddn=DN`` : The DN to use for the LDAP bind.
+ *               ``-b DN, --basedn=DN`` : The DN to start the tree with.
+ * ``-p PASSWORD, --password=PASSWORD`` : The password for the LDAP bind.
+
+#### OPTIONS
+
+ * ``-h, --help`` : Online Help
+
+## Requirements
+
+Access to a directory service, OpenLDAP and SAMBA-4 AD are tested.
+
+## Dependencies
+
+* python with ldap module
+
+## Contributing
+
+Just write me an email.
+
+## License
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+    
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+    
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+## Author
+
+Georg Hopp <georg@steffers.org>