[exercise-basic] rename input files in readme to params.input

exercises/exercise-basic/README.md

@@ -23,7 +23,7 @@ Locate all the files you will need for this exercise
 * The __problem file__ for the __2p__ problem: `injection2pproblem.hh`
 * The __problem file__ for the __2p2c__ problem: `injection2p2cproblem.hh`
 * The shared __spatial parameters file__: `injection2pspatialparams.hh`
-* The shared __input file__: `exercise_basic.input`
+* The shared __input file__: `params.input`
 
 <hr><br>
 ### Task 2: Compiling and running an executable
@@ -44,8 +44,8 @@ make exercise_basic_2p exercise_basic_2p2c
 * Execute the two problems and inspect the result
 
 ```bash
-./exercise_basic_2p exercise_basic.input
-./exercise_basic_2p2c exercise_basic.input
+./exercise_basic_2p params.input
+./exercise_basic_2p2c params.input
 ```
 
 * you can look at the results with paraview
@@ -66,8 +66,7 @@ paraview injection-2p2c.pvd
 ```cmake
 # the two-phase non-isothermal simulation program
 dune_add_test(NAME exercise_basic_2pni
-              SOURCES exercise_basic_2pni.cc
-              CMD_ARGS exercise_basic.input)
+              SOURCES exercise_basic_2pni.cc)
 ```
 
 * Test that everything compiles without error