added slurm doc (#1418)

* added slurm doc

* added slurm doc

Author: williamFalcon

README.md

@@ -44,6 +44,7 @@ pip install pytorch-lightning
 
 ## Docs
 - [master](https://pytorch-lightning.readthedocs.io/en/latest)
+- [0.7.2](https://pytorch-lightning.readthedocs.io/en/0.7.2/)
 - [0.7.1](https://pytorch-lightning.readthedocs.io/en/0.7.1/)
 - [0.6.0](https://pytorch-lightning.readthedocs.io/en/0.6.0/)
 - [0.5.3.2](https://pytorch-lightning.readthedocs.io/en/0.5.3.2/)

docs/source/slurm.rst

@@ -88,4 +88,9 @@ to run into the walltime, and it does the following:
 2. Requeues the job.
 3. When the job starts, it loads the temporary checkpoint.
 
-.. note:: To get this behavior you have to do nothing.
+To get this behavior make sure to add the correct signal to your SLURM script
+
+.. code-block::
+
+    # 90 seconds before training ends
+    #SBATCH --signal=SIGUSR1@90