updated dependencies for widgetsnbextension and ipywidgets for 1.4.1

Author: jyaistMap

guide/01-getting-started/system-requirements.ipynb

@@ -23,8 +23,8 @@
     "* [pyshp](https://pypi.python.org/pypi/pyshp/)\n",
     "* [matplotlib](https://matplotlib.org/)\n",
     "* [notebook](https://ipython.org/notebook.html)\n",
-    "* [ipywidgets >=5.2.2,<7](https://ipywidgets.readthedocs.io/en/stable/)\n",
-    "* [widgetsnbextension >=1.2.6,<3](https://pypi.python.org/pypi/widgetsnbextension)\n",
+    "* [ipywidgets >=7](https://ipywidgets.readthedocs.io/en/stable/)\n",
+    "* [widgetsnbextension >=3](https://pypi.python.org/pypi/widgetsnbextension)\n",
     "* [keyring](https://pypi.python.org/pypi/keyring/10.6.0)\n",
     "* [winkerberos](https://pypi.python.org/pypi/winkerberos/0.7.0) (Windows only)\n",
     "\n",
@@ -48,7 +48,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.5.5"
+   "version": "3.6.2"
   }
  },
  "nbformat": 4,