docs: add TUG Julia package README.md

julia/TUG/README.md

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+# TUG: Transport on Uniform Grids for Julia
+
+## Overview
+
+The TUG Julia package is a port of the same-named C++ library.
+
+## Prerequisites
+
+Before installing TUG, ensure you have Julia installed on your system. Julia can be downloaded and installed from [the official Julia website](https://julialang.org/downloads/).
+
+## Installation
+
+To install the TUG package locally, follow these steps in the Julia REPL (Read-Eval-Print Loop):
+
+1. **Open Julia REPL**: You can start it by executing `julia` in your command line.
+2. **Enter Pkg mode**: Press `]` to enter Pkg mode, which is Julia's package manager.
+3. **Develop the Package Locally**:
+   ```julia
+   (v1.x) pkg> develop path/to/tug/julia/TUG  # Replace with the actual path to your TUG directory
+   ```
+4. **Exit Pkg mode**: Press `backspace` to exit Pkg mode.
+5. **Use the Package**:
+   ```julia
+   julia> using TUG
+   ```
+
+## Building the Documentation
+
+To build the documentation for TUG:
+
+1. **Navigate to the `docs` Directory**: 
+   ```shell
+   cd path/to/tug/julia/TUG/docs
+   ```
+2. **Build the Documentation**:
+    ```shell
+    julia make.jl
+    ```
+
+## Running Tests
+
+To run the tests for TUG, follow these steps:
+
+1. **Navigate to the TUG Package Directory**:
+   ```shell
+   cd path/to/tug/julia/TUG
+   ```
+2. **Enter Pkg mode and run the tests**:
+    ```julia
+    (v1.x) pkg> test TUG
+    ```
+
+## Getting Started
+
+To get started with TUG:
+
+### Creating a Simulation
+
+```julia
+# Import the TUG package
+using TUG
+
+# Create a grid
+grid = TUG.Grid{Float64}(5, ones(1, 5))
+
+# Define boundary conditions
+boundary = TUG.Boundary{Float64}(grid)
+
+# Initialize a simulation
+simulation = TUG.Simulation{Float64}(grid, boundary)
+```
+
+### Running the Simulation
+
+```julia
+# Set initial concentrations
+TUG.setConcentrations!(grid, [1.0, 1.0, 20.0, 1.0, 1.0])
+
+# Run the simulation
+TUG.run(simulation)
+
+# Retrieve the concentrations
+concentrations = TUG.getConcentrations(grid)
+```
+
+## More Information
+
+For a detailed reference of all functionalities and more comprehensive examples, please refer to the documentation in this repository.