Fix screenshot scaling

.gitignore

@@ -24,6 +24,7 @@ wheels/
 *.egg-info/
 .installed.cfg
 *.egg
+_tmp*
 
 # PyInstaller
 #  Usually these files are written by a python script from a template

README.rst

@@ -7,7 +7,7 @@ parsedmarc
 .. image:: https://raw.githubusercontent.com/domainaware/parsedmarc/master/docs/_static/screenshots/dmarc-summary-charts.png
    :alt: A screenshot of DMARC summary charts in Kibana
    :align: center
-   :scale: 25%
+   :scale: 50
    :target: https://raw.githubusercontent.com/domainaware/parsedmarc/master/docs/_static/screenshots/dmarc-summary-charts.png
 
 ``pasedmarc`` is a Python module and CLI utility for parsing DMARC reports.

docs/index.rst

@@ -11,7 +11,7 @@ Welcome to parsedmarc's documentation!
 
 .. image:: /_static/screenshots/dmarc-summary-charts.png
    :alt: A screenshot of DMARC summary charts in Kibana
-   :scale: %
+   :scale: 50 %
    :align: center
    :target: /_static/screenshots/dmarc-summary-charts.png