Update some markdown files.

Author: DanielGoldfarb

README.md

@@ -21,11 +21,11 @@
   - **[The New API](https://github.com/matplotlib/mplfinance#newapi)**
   - **[Tutorials](https://github.com/matplotlib/mplfinance#tutorials)**
     - **[Basic Usage](https://github.com/matplotlib/mplfinance#usage)**
+    - **[Customizing the Appearance of Plots](https://github.com/matplotlib/mplfinance/blob/master/markdown/customization_and_styles.md)**
     - **[Adding Your Own Technical Studies to Plots](https://github.com/matplotlib/mplfinance/blob/master/examples/addplot.ipynb)**
-    - **[Saving the Plot to a File](https://github.com/matplotlib/mplfinance/blob/master/examples/savefig.ipynb)**
-    - **[Customizing the Appearance of Plots](https://github.com/matplotlib/mplfinance/blob/master/examples/customization_and_styles.ipynb)**
     - **[Price-Movement Plots (Renko, P&F, etc)](https://github.com/matplotlib/mplfinance/blob/master/examples/price-movement_plots.ipynb)**
     - **[Trends, Support, Resistance, and Trading Lines](https://github.com/matplotlib/mplfinance/blob/master/examples/using_lines.ipynb)**
+    - **[Saving the Plot to a File](https://github.com/matplotlib/mplfinance/blob/master/examples/savefig.ipynb)**
   - **[Latest Release Info](https://github.com/matplotlib/mplfinance/blob/master/RELEASE_NOTES.md)**
   - **[Some Background History About This Package](https://github.com/matplotlib/mplfinance#history)**
   - **[Old API Availability](https://github.com/matplotlib/mplfinance#oldapi)**

RELEASE_NOTES.md

@@ -1,4 +1,4 @@
-### <a name="v0.12.5a0"></a>v0.12.5a0 &nbsp;&nbsp;&nbsp;&nbsp; Released Date 2020-05-24
+### <a name="v0.12.5a0"></a>v0.12.5a0 &nbsp;&nbsp;&nbsp;&nbsp; Released Date 2020-06-10
 #### Enhancements
 - **[Subplots: Create up to 10 "panels"](https://github.com/matplotlib/mplfinance/blob/master/markdown/subplots.md)**
   - Can modify relative sizes of panels

markdown/customization_and_styles.md

@@ -4,23 +4,15 @@
 
 ---
 
-### Customizing the appearance of your plots falls into two main categories:
-1. **mplfinance styles** for general customizations
-2. **key word arguments** for individual plot customizations
-
-
-
----
-
-### Use ` mplfinance styles ` to customize:
+### Use ` mplfinance styles ` for _general_ customizations applied to many plots,<br>for example:
 - colors  (candle colors, moving average colors, background, grid and figure colors)
 - grid style
 - y-axis on the right or left
 - matplotlib defaults
 
 ---
 
-### Use specific key word arguments to customize:
+### Use key word arguments for specific/individual plot customizations,<br>for example:
 - figure size and aspect ratio
 - display of non-trading periods (weekends, holidays, after hours trading)
 - figure title