Add metadata file.

meta/libraries.json

@@ -0,0 +1,20 @@
+{
+    "key": "fusion",
+    "name": "Fusion",
+    "authors": [
+        "Joel de Guzman",
+        "Dan Marsden",
+        "Tobias Schwinger"
+    ],
+    "description": "Library for working with tuples, including various containers, algorithms, etc.",
+    "documentation": "doc/html/",
+    "category": [
+        "Data",
+        "Metaprogramming"
+    ],
+    "maintainers": [
+        "Joel de Guzman <joel -at- boost-consulting.com>",
+        "Dan Marsden <danmarsden -at- yahoo.co.uk>",
+        "Tobias Schwinger <tschwinger -at- isonews2.com>"
+    ]
+}