build: add support for building with node-gyp

binding.gyp

@@ -0,0 +1,11 @@
+{
+  'targets': [
+    {
+      'target_name': 'node_expat',
+      'sources': [ 'node-expat.cc' ],
+      'libraries': [
+        '-lexpat'
+      ]
+    }
+  ]
+}

package.json

@@ -3,21 +3,18 @@
 ,"main": "./lib/node-expat"
 ,"description": "NodeJS binding for fast XML parsing."
 ,"keywords": ["xml","sax","expat","libexpat","parse","parsing"]
-,"scripts" : { "install": "node-waf configure build"
-	      ,"update": "node-waf build"
-	      ,"test": "vows --spec ./test.js"
-	     }
+,"scripts" : { "test": "vows --spec ./test.js" }
 ,"dependencies": {}
 ,"devDependencies": {"vows": ">=0.5.12"}
 ,"repository": { "type": "git"
-	       , "path": "git://github.com/astro/node-expat.git"
-	       }
+  , "path": "git://github.com/astro/node-expat.git"
+  }
 ,"homepage": "http://github.com/astro/node-expat"
 ,"bugs": "http://github.com/astro/node-expat/issues"
 ,"author": { "name": "Astro"
-	   , "email": "astro@spaceboyz.net"
-	   , "web": "http://spaceboyz.net/~astro/"
-	   }
+  , "email": "astro@spaceboyz.net"
+  , "web": "http://spaceboyz.net/~astro/"
+  }
 ,"contributors": ["Stephan Maka", "Derek Hammer", "Iein Valdez", "Peter Körner", "Camilo Aguilar", "Michael Weibel", "Alexey Zhuchkov", "Satyam Shekhar", "Dhruv Matani", "Andreas Botsikas", "Tom Hughes-Croucher"]
 ,"licenses": [{ "type": "MIT" }]
 ,"engines": { "node": ">=0.4" }