Create installation script for macOS

install_macOS

@@ -0,0 +1,52 @@
+#!/usr/bin/env bash
+# MIT License
+#
+# Copyright (c) 2018 Lazarus Lazaridis
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in all
+# copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.
+
+function _goto_install_error()
+{
+	echo "$@" >&2
+}
+
+GOTO_FILE_LOCATION="$1"
+
+RC=""
+if [ -f ~/.bashrc ]; then
+	RC="$HOME/.bashrc"
+elif [ -f ~/.cshrc ]; then
+	RC="$HOME/.cshrc"
+elif [ -f ~/.kshrc ]; then
+	RC="$HOME/.kshrc"
+elif [ -f ~/.zshrc ]; then
+	RC="$HOME/.zshrc"
+fi
+
+if [ -n "$RC" ]; then
+	if [ "$(grep -c "source $GOTO_FILE_LOCATION" "$RC")" == "0" ]; then
+		echo -e "\\n\\n# Source goto\\n[[ -s \"$GOTO_FILE_LOCATION\" ]] && source $GOTO_FILE_LOCATION\\n" >> "$RC"
+	fi
+
+	# shellcheck source=/dev/null
+	source "$GOTO_FILE_LOCATION"
+else
+	_goto_install_error "Error sourcing goto in your startup file.."
+	_goto_install_error "E.g ~/.bashrc ~/.cshrc etc.."
+fi