Refactor .gitignore and fix macOS guide

Apply sort to .gitignore.
Add **/.DS_Store to .gitignore to improve compatibility with macOS.

Add python3 to dependencies installation guide.
Change SDK version from 15.0 to 15 due to new version release.

.gitignore

@@ -1,14 +1,15 @@
-cmake-build-debug/
-build/
-Build/
-BUILD/
-bUILD/
-Datasets/
-.sconsign.dblite
-lib/
+**/.DS_Store
+**/myeasylog.log
 .csv
 .idea/
+.sconsign.dblite
 .vscode/
-**/myeasylog.log
-dist
-venv
+BUILD/
+Build/
+Datasets/
+bUILD/
+build/
+cmake-build-debug/
+dist/
+lib/
+venv/

README.md

@@ -235,7 +235,7 @@ To use test datasets you will need:
 
 Run the following commands:
 ```sh 
-sudo apt install gcc g++ cmake libboost-all-dev git-lfs
+sudo apt install gcc g++ cmake libboost-all-dev git-lfs python3
 export CC=gcc
 export CXX=g++
 ```
@@ -253,7 +253,7 @@ Follow the prompts to continue.
 To install GCC and CMake on macOS we recommend to use [Homebrew](https://brew.sh/) package manager. With Homebrew
 installed, run the following commands:
 ```sh
-brew install gcc@14 cmake
+brew install gcc@14 cmake python3
 ```
 After installation, check `cmake --version`. If command is not found, then you need to add to environment path to
 homebrew installed packages. To do this open `~/.zprofile` (for Zsh) or
@@ -285,7 +285,7 @@ export CXX=g++-14
 export SDKROOT=/Library/Developer/CommandLineTools/SDKs/MacOSX14.sdk/
 ```
 The first two lines set GCC as the default compiler in CMake. The last export is also necessary due to issues with GCC 14 and
-the last MacOSX15.0.sdk used by CMake by default, you can read more about this [here](https://gist.github.com/scivision/d69faebbc56da9714798087b56de925a)
+the last macOS 15 SDK used by CMake by default, you can read more about this [here](https://gist.github.com/scivision/d69faebbc56da9714798087b56de925a)
 and [here](https://github.com/iains/gcc-14-branch/issues/11).
 
 ### Building the project