diff --git a/README.md b/README.md
index c10db6f..a160ac5 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,6 @@
 # WaterNetAnalyzer
-....is a QGIS3 plugin to create a water network (sewer network, river network) from a line layer (shapefile). So far the plugin provides three tools. 
+....is a QGIS3 plugin to create a water network (sewer network, river network) from a line layer (shapefile). So far the plugin provides three tools. An instructional video can be found [on youtube](https://www.youtube.com/watch?v=3GBr57evQPI) (thanks to Hans van der Kwast)
+
 **Installation:** 
 * *Option 1: from zip-File (latest Versions will appear here first)*
   * Download the Git repository as zip-File 
@@ -10,7 +11,7 @@
   * search for 'WaterNetAnalyzer' and directly install by clicking on 'install plugin' 
 
 The plugin should appear in your Processing Toolbox. 
-An example line layer can be found in [the testdata folder](/testdata)
+An example line layer can be found in [the testdata folder](/testdata). An 
 
 ## 1 Water Network Constructor
 The first tool adds information about connections in the network to the attribute table (the simple algorithm is shown in the figure below). You just have to select the undermost line segment (e.g. in a sewage system it´s the last one before entering a treatment plant, in a river system it´s the river mouth). Select whether you want to change line directions according to flow directions (new in version 1.3) and click on "Run". From version 1.4 on, you can choose an already existing column of the attribute table as "NET_ID" (se below) or generate a new one.
diff --git a/metadata.txt b/metadata.txt
index 92e5824..afe6cf6 100644
--- a/metadata.txt
+++ b/metadata.txt
@@ -6,11 +6,11 @@
 name=WaterNetAnalyzer
 qgisMinimumVersion=3.0
 description=Generate water network, get flow path upstream/downstream
-version=1.6
+version=1.7
 author=Jannik Schilling
 email=jannik.schilling@uni-rostock.de
 
-about=This plugin creates a network with one outlet from a line layer (shapefile). A warning is generated when circles are found in the network. You can use the tools to show the flow path upstream or downstream of a segment in the network and accumulate flow/loads along the flow path.
+about=This plugin creates a network with one outlet from a line layer (shapefile). A warning is generated when circles are found in the network. You can use the tools to show the flow path upstream or downstream of a segment in the network and accumulate flow/loads along the flow path. An instructional video can be found here: https://www.youtube.com/watch?v=3GBr57evQPI  (thanks to  Hans van der Kwast)
 
 tracker=https://github.com/Jannik-Schilling/WaterNetAnalyzer/issues
 repository=https://github.com/Jannik-Schilling/WaterNetAnalyzer
@@ -20,7 +20,10 @@ repository=https://github.com/Jannik-Schilling/WaterNetAnalyzer
 
 hasProcessingProvider=yes
 # Uncomment the following line and add your changelog:
-changelog=1.6 2020-10-21
+changelog=1.7 2021-04
+      - updated meta information
+      - deletion of unused code
+    1.6 2020-10-21
       - fix for the tr()-issue
     1.5 2020-07-28
       - updated icon