Add dislcaimer. Remove incorrect warning (#902)

Author: Opt-Mucca

docs/install.rst

@@ -2,8 +2,6 @@
 Installation Guide
 ##################
 
-**This file is deprecated and will be removed soon. Please see the online documentation.**
-
 This page will detail all methods for installing PySCIPOpt via package managers,
 which come with their own versions of SCIP. For building PySCIPOpt against your
 own custom version of SCIP, or for building PySCIPOpt from source, visit :doc:`this page </build>`.

src/pyscipopt/scip.pxi

@@ -6164,7 +6164,8 @@ cdef class Model:
 
     def solveConcurrent(self):
         """Transforms, presolves, and solves problem using additional solvers which emphasize on
-        finding solutions."""
+        finding solutions.
+        WARNING: This feature is still experimental and prone to some errors."""
         if SCIPtpiGetNumThreads() == 1:
             warnings.warn("SCIP was compiled without task processing interface. Parallel solve not possible - using optimize() instead of solveConcurrent()") 
             self.optimize()