Update google colab setup in notebooks

Undate save_all in grapher to make dest. folder if it doesn't exist

crcard_graphs.ipynb

@@ -9,10 +9,7 @@
     "#\n",
     "# Google Colab setup\n",
     "#\n",
-    "#import os\n",
-    "#os.chdir(\"/content\")\n",
-    "#!git clone https://github.com/Doctorado-ML/STree.git\n",
-    "#os.chdir(\"/content/STree\")"
+    "#!pip install git+https://github.com/doctorado-ml/stree"
    ]
   },
   {

setup.py

@@ -1,6 +1,6 @@
 import setuptools
 
-__version__ = "0.9rc1"
+__version__ = "0.9rc2"
 __author__ = "Ricardo Montañana Gómez"
 
 def readme():
@@ -12,7 +12,7 @@ setuptools.setup(
     name='STree',
     version=__version__,
     license='MIT License',
-    description='a python interface to oblique decision tree implementations',
+    description='Oblique decision tree with svm nodes',
     long_description=readme(),
     long_description_content_type='text/markdown',
     packages=setuptools.find_packages(),
@@ -34,7 +34,6 @@ setuptools.setup(
         'matplotlib',
         'ipympl'
     ],
-    data_files=[('data', ['data/.gitignore'])],
     test_suite="stree.tests",
     zip_safe=False
 )

stree/Strees_grapher.py

@@ -164,6 +164,8 @@ class Stree_grapher(Stree):
         :type save_folder: str, optional
         """
         self._check_fitted()
+        if not os.path.isdir(save_folder):
+            os.mkdir(save_folder)
         seq = 1
         for node in self:
             node.save_hyperplane(save_folder=save_folder,

test.ipynb

@@ -9,10 +9,7 @@
     "#\n",
     "# Google Colab setup\n",
     "#\n",
-    "#import os\n",
-    "#os.chdir(\"/content\")\n",
-    "#!git clone https://github.com/Doctorado-ML/STree.git\n",
-    "#os.chdir(\"/content/STree\")"
+    "#!pip install git+https://github.com/doctorado-ml/stree"
    ]
   },
   {

test2.ipynb

@@ -9,10 +9,7 @@
     "#\n",
     "# Google Colab setup\n",
     "#\n",
-    "#import os\n",
-    "#os.chdir(\"/content\")\n",
-    "#!git clone https://github.com/Doctorado-ML/STree.git\n",
-    "#os.chdir(\"/content/STree\")"
+    "#!pip install git+https://github.com/doctorado-ml/stree"
    ]
   },
   {

test_graphs.ipynb

@@ -9,10 +9,7 @@
     "#\n",
     "# Google Colab setup\n",
     "#\n",
-    "#import os\n",
-    "#os.chdir(\"/content\")\n",
-    "#!git clone https://github.com/Doctorado-ML/STree.git\n",
-    "#os.chdir(\"/content/STree\")"
+    "#!pip install git+https://github.com/doctorado-ml/stree"
    ]
   },
   {