community/nodejs-current: add provides=nodejs

In order that yarn can be used with either version of nodejs.

community/nodejs-current/APKBUILD

@@ -3,7 +3,7 @@
 pkgname=nodejs-current
 # The current stable version, i.e. non-LTS.
 pkgver=7.2.1
-pkgrel=0
+pkgrel=1
 pkgdesc="JavaScript runtime built on V8 engine - current stable version"
 url="http://nodejs.org/"
 arch="all"
@@ -13,6 +13,7 @@ depends_dev="libuv"
 makedepends="$depends_dev python2 openssl-dev zlib-dev libuv-dev linux-headers
 	paxmark binutils-gold http-parser-dev ca-certificates"
 subpackages="$pkgname-dev $pkgname-doc"
+provides="nodejs"
 replaces="nodejs nodejs-lts"  # nodejs-lts for backward compatibility
 source="https://nodejs.org/dist/v$pkgver/node-v$pkgver.tar.gz
 	use-system-ca-certs.patch