Update documentation

README.md

@@ -26,6 +26,10 @@ hesitate to read the source code and understand the mechanism of this bot.
 - [Quick start](#quick-start)
 - [Documentations](https://github.com/gcarq/freqtrade/blob/develop/docs/index.md)
    - [Installation](https://github.com/gcarq/freqtrade/blob/develop/docs/installation.md)
+   - [Configuration](https://github.com/gcarq/freqtrade/blob/develop/docs/configuration.md)
+   - [Strategy Optimization](https://github.com/gcarq/freqtrade/blob/develop/docs/bot-optimization.md)
+   - [Backtesting](https://github.com/gcarq/freqtrade/blob/develop/docs/backtesting.md)
+   - [Hyperopt](https://github.com/gcarq/freqtrade/blob/develop/docs/hyperopt.md)
 - [Support](#support)
    - [Help](#help--slack)
    - [Bugs](#bugs--issues)

docs/bot-optimization.md

@@ -114,4 +114,4 @@ def populate_indicators(dataframe: DataFrame) -> DataFrame:
 
 ## Next step
 Now you have a perfect strategy you probably want to backtesting it. 
-Your next step is to learn [How to use ](https://github.com/gcarq/freqtrade/blob/develop/docs/backtesting.md).
+Your next step is to learn [How to use the Backtesting](https://github.com/gcarq/freqtrade/blob/develop/docs/backtesting.md).