[TASK] Update Documentation

README.md

-# lfeditor
+#  Ext: lfeditor 
 
-The lfeditor is a GUI for adding, editing and deleting translations in .xlf-files. The editor can be found in the
-admin-tool section of the TYPO3-backend (click on your user in the top panel and select LFEditor).
+<img src="https://www.sgalinski.de/typo3conf/ext/project_theme/Resources/Public/Images/logo.svg" />
+
+License: [GNU GPL, Version 2](https://www.gnu.org/licenses/gpl-2.0.html)
+
+Repository: https://gitlab.sgalinski.de/typo3/lfeditor
+
+Please report bugs here: https://gitlab.sgalinski.de/typo3/lfeditor
+
+TYPO3 version: >7.6 
+
+## About
+
+The lfeditor is a GUI for adding, editing and deleting translations in .xlf files. The editor can be found in the
+**admin tool section** <img height="20px" width="20px" src="https://camo.githubusercontent.com/7ce33ea8f66e24219bbdbe607d841285719fda4f/68747470733a2f2f7261776769742e636f6d2f5459504f332f5459504f332e49636f6e732f6d61737465722f646973742f6176617461722f6176617461722d64656661756c742e737667"> of the TYPO3 backend (click on your user in the top panel and select LFEditor).
+
+## Configuration
+
+#### Extension Settings
+In the Extension manager you can configure the following settings of the **lfeditor** extension:
+
+###### View languages
+List of languages which will be available in the extension (comma separated country codes e.g. en, de, fi).
+
+If this setting is empty, all languages will be used (Warning: very long list!). Default language is always included.
+
+---
+
+###### Default language
+If **en** is not the default language in TYPO3 backend, the default language must be defined here. If this field is empty,
+English is used as default.
+
+---
+
+###### Ignore extensions
+Regular expression which can be used to exclude extensions by their extension key.
+
+---
+
+###### Change XLF date
+If set to TRUE, LFEditor will change the date in the XLF files on each change.
+
+#### Extension Settings
+There is an additional option in the **Access Rights** tab on the very bottom, when editing a non-admin backend user. 
+You can now select the **The user can save localization changes directly to extensions?**.
+
+Backend users who don't have this check box selected, will be in override mode by default
+and they can't switch to another mode.