diff --git a/build.sh b/build.sh
new file mode 100755
index 0000000..a3978e4
--- /dev/null
+++ b/build.sh
@@ -0,0 +1,122 @@
+#!/bin/sh
+
+# Script will exit if exit code is not 0.
+set -e
+
+# Define colors for log.
+_info()    { echo "\033[1m[INFO]\033[0m $1" ; }
+_ok()      { echo "\033[32m[OK]\033[0m $1" ; }
+_error()   { echo "\033[31m[ERROR]\033[0m $1" ; }
+_warn()   { echo "\033[33m[WARN]\033[0m $1" ; }
+_logo()   { echo "\033[1m $1\033[0m" ; }
+
+
+# Header
+echo ""
+echo ""
+_logo "  █▌     ▀▀▀▀▀▀ ║█    ╫█ ▐█µ   ▐█  ▄██▀▀██▌  ██     ▀└ █▌   ╒█▌ █µ      █▌  "
+_logo " ▐█             ███▌  ██ ████  ██ ██     ╟█ ▐█     ▐█ ║█    ╫█ ║██▌  ╓███   "
+_logo " ██     ▀▀▀▀▀▀ ╒█Γ└██▓█  █▌ ██▓█▌▐█      ██ ██     ██ ██       ██ ███▀ ██   "
+_logo "┌▀             ██   ▀██ ║█   ╙██ └██   ╓██  █▌    ╒█▌ ██   ██ ╒█▌  ╙  ╒█Γ   "
+_logo " -▀▀▀▀ ╝▀▀▀▀▀▀ ▀▀     ▀ ▀▀     ▀   ▀▀█▀▀   ╘▀▀▀▀▀ ╝▀   ▀██▀   ╝▀      ╝▀    "
+_logo " "
+_logo "             P Y T H O N    B  U  I  L  D     S  C  R  I  P  T              "
+_logo " -------------------------------------------------------------------------  "
+echo ""
+echo ""
+
+# Check if Python 3 is installed and install it if not.
+_info "Checking and installing requirements ..."
+if test ! "$(which python3)"; then
+    _info "Python 3 is not installed! Installing with Homebrew ..."
+    /bin/bash -c \
+    "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install.sh)"
+    brew update
+    brew install python3
+else
+    _ok "Python 3 is installed."
+fi
+
+# Creating dist folder.
+mkdir -p dist/
+
+# Delete the content of dist folder (to remove old .app builds).
+_info "Deleting old builds in /dist folder."
+rm -Rf dist/*
+
+# Check if venv is created and do so if not.
+if ! [ -d "./venv" ] ; then
+    _info "Creating virtual environment, so we do not pollute the system."
+    python3 -m venv venv
+else
+    _ok "Looks like a virtual environment is already created."
+fi
+
+# Activate virtual environment, update and install requirements.
+_info "Installing and updating requirements."
+source venv/bin/activate
+pip install --upgrade pip
+python -m pip install pip-tools
+python -m pip install build twine    
+pip install -r requirements.txt
+
+# Save name of the package.
+package_directory=$(find src -mindepth 2 -maxdepth 2 -type f -name '__init__.py' -exec dirname {} \;)
+package_name=$(basename "$package_directory")
+
+# Get the version of the package from __init__.py file.
+version=$(grep '__version__ =' "$package_directory/__init__.py" | sed -E 's/^.*"([^"]+)".*$/\1/')
+
+# Override the version variable of setup.cfg with the version number of __init__.py.
+tmpfile=$(mktemp)
+sed "s/^version =.*/version = $version/" setup.cfg > "$tmpfile"
+mv "$tmpfile" setup.cfg
+_ok "Updated the version variable in 'setup.cfg' to $version"
+
+# Build dist and verify.
+_info "Building the distribution files. This can take a while ..."
+if python -m build
+then
+    twine check dist/*
+    _ok "BUILD FINISHED!"
+else
+    _error "BUILD FAILED!"
+    exit 1
+fi
+
+# Upload build to PyPI. Credentials are in '~.pypirc'.
+_info "Uploading built package to PyPI index."
+if twine upload -r pypi dist/*
+then
+    _ok "UPLOAD FINISHED!"
+else
+    _error "UPLOAD FAILED!"
+fi
+
+# Generate sha256 hash files.
+_info "Generating sha256 checksum files..."
+cd dist || exit
+for file in *; do
+    if [ -f "$file" ]; then
+        shasum -a 256 "$file" > "$file.sha256"
+    fi
+done
+
+# Validate sha256 checksums.
+if sha256sum -c *.sha256; then
+    _ok "Checksums are valid."
+    _ok "BUILD AND UPLOAD COMPLETED!"
+else
+    _error "Checksums are not valid."
+fi
+
+# Cleanup egg files.
+cd .. || exit
+rm -rf "src/${package_name}.egg-info"
+
+# Exit out of virtual environment.
+deactivate
+
+_info "Exiting ..."
+exit 0
+
diff --git a/setup.cfg b/setup.cfg
index 096193a..3c200b3 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -47,4 +47,4 @@ install_requires =
 [options.packages.find]
 where = src
 exclude =
-    tests
+    testsversion = 0.1.1