automation of updates and aliasing

Signed-off-by: Uncle Stretch <uncle.stretch@ghostchain.io>

update.sh

@@ -0,0 +1,24 @@
+echo "[+] trying to fetch main branch"
+git fetch origin main
+
+if [ $(git rev-list --count HEAD..origin/main) -gt 0 ]; then
+    echo "[+] pulling latest version of the main branch"
+    git pull origin main
+else
+    echo "[+] nothing to update from the remote repository"
+fi
+
+echo "[+] build for the new version starts in 3 seconds..."
+sleep 3
+cargo build --release
+
+echo "[+] need to store the 'ghost-eye' binary to '/usr/local/bin/'"
+sudo cp target/release/ghost-eye /usr/local/bin
+
+if ! grep -Fxq "alias ge=\"ghost-eye\"" ~/.bashrc; then
+    echo "alias ge=\"ghost-eye\"" >> ~/.bashrc
+    source ~/.bashrc
+    echo "[+] alias ge added, type ge to run ghost-eye"
+else
+    echo "[+] alias ge already found"
+fi