create unix install script in scripts dir

scripts/install.sh

@@ -0,0 +1,115 @@
+#!/bin/bash
+
+installPath=$1
+tranPath=""
+
+if [ "$installPath" != "" ]; then
+    tranPath=$installPath
+else
+    tranPath=/usr/local/bin
+fi
+
+UNAME=$(uname)
+ARCH=$(uname -m)
+
+rmOldFiles() {
+    if [ -f $tranPath/tran ]; then
+        sudo rm -rf $tranPath/tran*
+    fi
+}
+
+v=$(curl --silent "https://api.github.com/repos/abdfnx/tran/releases/latest" | grep '"tag_name":' | sed -E 's/.*"([^"]+)".*/\1/')
+
+releases_api_url=https://github.com/abdfnx/tran/releases/download
+
+successInstall() {
+    echo "🙏 Thanks for installing Tran! If this is your first time using the CLI, be sure to run `tran --help` first."
+}
+
+mainCheck() {
+    echo "Installing tran version $v"
+    name=""
+
+    if [ "$UNAME" == "Linux" ]; then
+        if [ $ARCH = "x86_64" ]; then
+            name="tran_linux_${v}_amd64"
+        elif [ $ARCH = "i686" ]; then
+            name="tran_linux_${v}_386"
+        elif [ $ARCH = "i386" ]; then
+            name="tran_linux_${v}_386"
+        elif [ $ARCH = "arm64" ]; then
+            name="tran_linux_${v}_arm64"
+        elif [ $ARCH = "arm" ]; then
+            name="tran_linux_${v}_arm"
+        fi
+
+        tranURL=$releases_api_url/$v/$name.zip
+
+        wget $tranURL
+        sudo chmod 755 $name.zip
+        unzip $name.zip
+        rm $name.zip
+
+        # tran
+        sudo mv $name/bin/tran $tranPath
+
+        rm -rf $name
+
+    elif [ "$UNAME" == "Darwin" ]; then
+        if [ $ARCH = "x86_64" ]; then
+            name="tran_macos_${v}_amd64"
+        elif [ $ARCH = "arm64" ]; then
+            name="tran_macos_${v}_arm64"
+        fi
+
+        tranURL=$releases_api_url/$v/$name.zip
+
+        wget $tranURL
+        sudo chmod 755 $name.zip
+        unzip $name.zip
+        rm $name.zip
+
+        # tran
+        sudo mv $name/bin/tran $tranPath
+
+        rm -rf $name
+
+    elif [ "$UNAME" == "FreeBSD" ]; then
+        if [ $ARCH = "x86_64" ]; then
+            name="tran_freebsd_${v}_amd64"
+        elif [ $ARCH = "i386" ]; then
+            name="tran_freebsd_${v}_386"
+        elif [ $ARCH = "i686" ]; then
+            name="tran_freebsd_${v}_386"
+        elif [ $ARCH = "arm64" ]; then
+            name="tran_freebsd_${v}_arm64"
+        elif [ $ARCH = "arm" ]; then
+            name="tran_freebsd_${v}_arm"
+        fi
+
+        tranURL=$releases_api_url/$v/$name.zip
+
+        wget $tranURL
+        sudo chmod 755 $name.zip
+        unzip $name.zip
+        rm $name.zip
+
+        # tran
+        sudo mv $name/bin/tran $tranPath
+
+        rm -rf $name
+    fi
+
+    # chmod
+    sudo chmod 755 $tranPath/tran
+}
+
+rmOldFiles
+mainCheck
+
+if [ -x "$(command -v tran)" ]; then
+    successInstall
+else
+    echo "Download failed 😔"
+    echo "Please try again."
+fi