Add automatic box.phar installation

Author: mblaschke

.gitignore

@@ -2,3 +2,4 @@
 *.phar
 *.bak
 src/vendor/*
+vendor/*

compile.sh

@@ -31,16 +31,13 @@ composer dump-autoload --optimize --no-dev
 ## create phar
 cd "$SCRIPT_DIR/"
 
-if hash box.phar 2>/dev/null; then
-    BOX_PATH=$(which box.phar)
-elif hash box 2>/dev/null; then
-    BOX_PATH=$(which box)
-else
-	echo 'ERROR: box.phar (box-project/box2) not found'
-	echo 'Try >> make install-box'
-	exit 1
+if [[ ! -f vendor/box.phar ]]; then
+    mkdir -p vendor
+    wget -Ovendor/box.phar https://github.com/box-project/box2/releases/download/2.7.5/box-2.7.5.phar
 fi
 
+BOX_PATH=vendor/box.phar
+
 php -d phar.readonly=0 "$BOX_PATH" build -c box.json
 
 cd "$OLD_PWD"