Add composer.phar to Makefile

Author: e1himself

.gitignore

@@ -1,2 +1,3 @@
 /vendor/
 composer.lock
+composer.phar

Makefile

@@ -3,6 +3,14 @@
 tests: vendor
 	php -d zend.assertions=1 -d assert.exception=1 vendor/bin/peridot ./specs
 
-vendor: composer.json composer.lock
+vendor: composer.json composer.lock composer.phar
+
+composer.lock: composer.json composer.phar
 	composer install
 	touch vendor
+
+composer.phar:
+	php -r "copy('https://getcomposer.org/installer', 'composer-setup.php');"
+	php -r "if (hash_file('sha384', 'composer-setup.php') === '55ce33d7678c5a611085589f1f3ddf8b3c52d662cd01d4ba75c0ee0459970c2200a51f492d557530c71c15d8dba01eae') { echo 'Installer verified'; } else { echo 'Installer corrupt'; unlink('composer-setup.php'); } echo PHP_EOL;"
+	php composer-setup.php
+	php -r "unlink('composer-setup.php');"