Update README.md

README.md

@@ -10,19 +10,23 @@ Potsdam Institute for Climate Impact Research. All files are licenced under
 BSD 2-Clause License, see the LICENCE file for details. The 4C model is a 
 collaborative work, see the AUTHOR file for details.
 
-For information about the 4C model see "about".
-For a basic introduction and installation see the file .... 
-For manual on "how to start" see the directory manuals. 
-For background information documents see the directory description/additional. 
-To test the propper working of the functions of the model see the directory data/4C testing. 
-All relevant publications regarding the model see the directory publications.
+- See http://www.pik-potsdam.de/4c/ for information about 4C and the manual
+- For the model description see 4C_description.pdf in the directory descriptions
+- The directory executables contains three executables with self-explanatory names
+- The directory source_code contains the corresponding source codes in three subdirectories with self-explanatory names
+- Additional information can be found in following directories:
+    * manuals: about "how to start" and " generate exe"  
+    * descriptions/additional: background information documents 
+    * descriptions/Fact_sheets: short summary of the model in English and German
+    * test_data_sets: test the propper working of the functions of the model with complete sets of data and control files 
+    * publications: all relevant publications regarding the model 4C
 
 The source code is distributed via a git repository at: 
 https://gitlab.pik-potsdam.de/foresee/4C and is ready to use.
 The code language is Fortran90. Since the model development is
 finished, there is no further development and no further support in model 
 download, setup, development or application. No merge or other development 
-requests will be handeled. There fore there are no code style recommendations or
+requests will be handeled. Therefore there are no code style recommendations or
 instructions on how to create source code ammendments.