Fix readme links and text

appinfo/info.xml

@@ -3,14 +3,14 @@
       xsi:noNamespaceSchemaLocation="https://apps.nextcloud.com/schema/apps/info.xsd">
     <id>printer</id>
     <name>Printer</name>
-    <summary>Creating a hash checksum of a file.</summary>
-    <description>
-        Allows users to create a hash checksum of a file.
-        Possible algorithms are md5, sha1, sha256, sha384, sha512 and crc32.
+     <summary>Allows to print files directly inside Nextcloud to a printer.</summary>
+     <description>
+       Please check the Readme on Github on how to set up this app!
+       Allows users to print files using the CUPS/LPR printing ecosystem.
 
-        Just open the details view of the file (Sidebar). There should be a new tab called "Checksum".
-        Select a algorithm and it will try to generate a hash.
-        If you want an other algorithm, just click on the reload button.
+       Just open the details view of the file (Sidebar). There should be a new tab called "Printer".
+       Select the orientation of your printed file and it will be sent to your printer.
+       If you want to print it again, just click on the reload button.
     </description>
     <version>0.0.2</version>
     <licence>agpl</licence>
@@ -26,8 +26,8 @@
     <category>tools</category>
     <website>https://github.com/e-alfred/nextcloud-printer/</website>
     <bugs>https://github.com/e-alfred/nextcloud-printer/issues</bugs>
-    <screenshot>https://raw.githubusercontent.com/e-alfred/nextcloud-printer/master/screenshots/print.gif</screenshot>
-    <dependencies>
+    <screenshot>https://github.com/e-alfred/nextcloud-printer/raw/master/screenshots/printer.gif</screenshot>
+         <dependencies>
         <nextcloud min-version="16" max-version="18" />
     </dependencies>
 </info>