Rename master to main in README

README.md

@@ -30,7 +30,7 @@ Last but not least, `talipp` is a community project and therefore open to any su
 - new 'Schaff Trend Cycle' indicator added!
 - talipp is on [conda-forge](https://github.com/conda-forge/talipp-feedstock) too!
 
-For the full history of changes see [CHANGELOG](https://github.com/nardew/talipp/blob/master/CHANGELOG.md).
+For the full history of changes see [CHANGELOG](https://github.com/nardew/talipp/blob/main/CHANGELOG.md).
 
 ---
 
@@ -87,7 +87,7 @@ pip install talipp
 ```
 In case you want to install the latest version from the repo, use
 ```bash
-pip install git+https://github.com/nardew/talipp.git@master
+pip install git+https://github.com/nardew/talipp.git@main
 ```
 
 ### Examples
@@ -164,9 +164,9 @@ To illustrate performance scaling of `talipp` we ran several tests together with
 - where `talipp` clearly takes the lead is  incremental calculation. Again this is well expected since `talipp`'s CUD operations take `O(1)` time compared to `O(n)` time of `talib`. For 50k input the difference is as big as ~200ms vs. ~6800ms.
 - from the graphs it is apparent that `talipp` scales linearly with the size of the input compared to quadratic curve of `talib` when incremental operations are concerned. This follows from `talipp`'s `O(1)` time for delta operations vs. `talib`'s `O(n)`.
 
-![SMA(20)](https://raw.githubusercontent.com/nardew/talipp/master/images/SMA_20.svg)
-![TEMA(20)](https://raw.githubusercontent.com/nardew/talipp/master/images/TEMA_20.svg)
-![StochRSI(14,3,3)](https://raw.githubusercontent.com/nardew/talipp/master/images/StochRSI_14_3_3.svg)
+![SMA(20)](https://raw.githubusercontent.com/nardew/talipp/main/images/SMA_20.svg)
+![TEMA(20)](https://raw.githubusercontent.com/nardew/talipp/main/images/TEMA_20.svg)
+![StochRSI(14,3,3)](https://raw.githubusercontent.com/nardew/talipp/main/images/StochRSI_14_3_3.svg)
 
 ### Contact