added update -all

ml1/2_0_0_Intro_ML.ipynb

@@ -102,7 +102,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.5.5"
+   "version": "3.5.6"
   },
   "latex_envs": {
    "LaTeX_envs_menu_present": true,

ml1/2_0_1_Objectives.ipynb

@@ -95,7 +95,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.5.5"
+   "version": "3.5.6"
   },
   "latex_envs": {
    "LaTeX_envs_menu_present": true,

ml1/2_1_Intro_ScikitLearn.ipynb

@@ -122,6 +122,8 @@
    "source": [
     "If you installed the conda distribution, scikit-learn is already installed! This is the best option.\n",
     "\n",
+    "Anyway, before starting, update all the packages: `conda update --all`. \n",
+    "\n",
     "In case it is an old installation, you can update it using conda: `conda update scikit-learn`.\n",
     "\n",
     "If it is not installed, install it with conda: `conda install scikit-learn`.\n",
@@ -176,7 +178,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.5.5"
+   "version": "3.5.6"
   },
   "latex_envs": {
    "LaTeX_envs_menu_present": true,