Add tutorial READMEs and fix tutorial return codes

Add README.md files for moeo/tutorial/Lesson{1-4}, smp/tutorial/Lesson{1-4},
and mo/tutorial/Lesson9 — these tutorials had no documentation.

Fix return 1 → return 0 in 28 tutorial main() functions across mo/ and
smp/ that unconditionally returned failure status.

smp/tutorial/Lesson1/README.md

@@ -0,0 +1,23 @@
+# Master/Workers wrapping with eoEasyEA
+
+Wraps a standard eoEasyEA with the ParadisEO-SMP parallel evaluation model,
+applied to the Quadratic Assignment Problem (QAP).
+
+The QAP assigns facilities to locations to minimize cost (flow x distance).
+The representation is a permutation.
+
+## Running
+
+From the `build/smp/tutorial/Lesson1` directory:
+
+```shell
+./lesson1_eoEasyEA lesson1_eoEasyEA.param
+```
+
+## How it works
+
+The key idea: ParadisEO-SMP parallelizes evaluation by wrapping an existing
+sequential algorithm. The algorithm code itself stays the same. `QAP.h`
+defines the problem representation and evaluation, `QAPGA.h` defines the GA
+operators, and `parserStruct.h` + `utils.h` handle parameter parsing and
+instance loading. See also `lesson1_data.dat` for the problem instance.

smp/tutorial/Lesson1/lesson1_eoEasyEA.cpp

@@ -23,8 +23,8 @@ same conditions as regards security.
 The fact that you are presently reading this means that you have had
 knowledge of the CeCILL license and that you accept its terms.
 
-ParadisEO WebSite : http://paradiseo.gforge.inria.fr
-Contact: paradiseo-help@lists.gforge.inria.fr
+ParadisEO WebSite : https://nojhan.github.io/paradiseo/
+Contact: https://github.com/nojhan/paradiseo/issues
 */
 
 /**
@@ -125,5 +125,5 @@ int main(int argc, char **argv)
     delete[] b;
 
 
-    return 1;
+    return 0;
 }