Update README with fresher screenshots (#4825)

* Improve screenshots in README.md

* Add border to images

* Add visualizations.png

README.md

@@ -26,27 +26,23 @@ Screenshots & Gifs
 
 **View Dashboards**
 
-![superset-dashboard](https://cloud.githubusercontent.com/assets/130878/20371438/a703a2a0-ac19-11e6-80c4-00a47c2eb644.gif)
+<kbd><img title="View Dashboards" src="https://raw.githubusercontent.com/apache/incubator-superset/master/superset/assets/images/screenshots/bank_dash.png"></kbd><br/>
 
-<br/>
+**Slice & dice your data**
 
-**View/Edit a Slice**
+<kbd><img title="Slice & dice your data" src="https://raw.githubusercontent.com/apache/incubator-superset/master/superset/assets/images/screenshots/explore.png"></kbd><br/>
 
-![superset-explore-slice](https://cloud.githubusercontent.com/assets/130878/20372732/410392f4-ac22-11e6-9c6d-3ef512e81212.gif)
+**Query and visualize your data with SQL Lab**
 
-<br/>
+<kbd><img title="SQL Lab" src="https://raw.githubusercontent.com/apache/incubator-superset/master/superset/assets/images/screenshots/sqllab.png"></kbd><br/>
 
-**Query and Visualize with SQL Lab**
+**Visualize geospatial data with deck.gl**
 
-![superset-sql-lab-visualization](https://cloud.githubusercontent.com/assets/130878/20372911/7c3b3358-ac23-11e6-8f24-923ef1b35715.gif)
+<kbd><img title="Geospatial" src="https://raw.githubusercontent.com/apache/incubator-superset/master/superset/assets/images/screenshots/deckgl_dash.png"></kbd><br/>
 
-<br/>
+**Choose from a wide array of visualizations**
 
-![superset-dashboard-misc](https://cloud.githubusercontent.com/assets/130878/20234704/0f40778c-a835-11e6-9556-983a62ea061b.png)
-
-![superset-edit-table](https://cloud.githubusercontent.com/assets/130878/20234705/0f415c88-a835-11e6-8b03-f7c35d56dd7d.png)
-
-![superset-query-search](https://cloud.githubusercontent.com/assets/130878/20234706/0f430a10-a835-11e6-8a0d-8b26cc2e6bbd.png)
+<kbd><img title="Visualizations" src="https://raw.githubusercontent.com/apache/incubator-superset/master/superset/assets/images/screenshots/visualizations.png"></kbd><br/>
 
 Apache Superset
 ---------------
@@ -182,23 +178,3 @@ the world know they are using Superset. Join our growing community!
  - [Yahoo!](https://yahoo.com/)
  - [Zaihang](http://www.zaih.com/)
  - [Zalando](https://www.zalando.com)
-
-
-More screenshots
-----------------
-
-![superset-security-menu](https://cloud.githubusercontent.com/assets/130878/20234707/0f565886-a835-11e6-9277-b4f5f4aa2fcc.png)
-
-![superset-slice-bubble](https://cloud.githubusercontent.com/assets/130878/20234708/0f57f3d0-a835-11e6-8268-fcefe8f868c8.png)
-
-![superset-slice-map](https://cloud.githubusercontent.com/assets/130878/20234709/0f5a5a44-a835-11e6-987a-1b6f8ac9922b.png)
-
-![superset-slice-multiline](https://cloud.githubusercontent.com/assets/130878/20234710/0f632d68-a835-11e6-98d1-542dcb618193.png)
-
-![superset-slice-sankey](https://cloud.githubusercontent.com/assets/130878/20234711/0f639136-a835-11e6-8721-fe5e48dab8e7.png)
-
-![superset-slice-view](https://cloud.githubusercontent.com/assets/130878/20234712/0f63c4c6-a835-11e6-8595-6091a6428fa9.png)
-
-![superset-sql-lab-2](https://cloud.githubusercontent.com/assets/130878/20234713/0f67b856-a835-11e6-9d50-7a52168f66fd.png)
-
-![superset-sql-lab](https://cloud.githubusercontent.com/assets/130878/20234714/0f68f45a-a835-11e6-9467-f47ad0af7e79.png)

docs/installation.rst

@@ -298,7 +298,7 @@ Here's a list of some of the recommended packages.
 +---------------+-------------------------------------+-------------------------------------------------+
 |  sqlite       |                                     | ``sqlite://``                                   |
 +---------------+-------------------------------------+-------------------------------------------------+
-|  Redshift     | ``pip install sqlalchemy-redshift`` | ``redshift+psycopg2://``                      |
+|  Redshift     | ``pip install sqlalchemy-redshift`` | ``redshift+psycopg2://``                        |
 +---------------+-------------------------------------+-------------------------------------------------+
 |  MSSQL        | ``pip install pymssql``             | ``mssql://``                                    |
 +---------------+-------------------------------------+-------------------------------------------------+