add database migration support

.gitignore

@@ -14,4 +14,4 @@ pom.xml.asc
 /public/out
 /public/index.js
 /images
-
+/db

database.json

@@ -0,0 +1,6 @@
+{
+  "dev": {
+    "driver": "sqlite3",
+    "filename": "db/dev.db"
+  }
+}

migrations/20160114114150-images.js

@@ -0,0 +1,19 @@
+var dbm = global.dbm || require('db-migrate');
+var type = dbm.dataType;
+
+exports.up = function(db, callback) {
+  db.createTable('images', {
+    id: {type: 'int', primaryKey: true},
+    path: 'string',
+    name: 'string',
+    width: 'int',
+    height: 'int',
+    type: 'string',
+    createdAt: 'int',
+    updatedAt: 'int'
+  }, callback);
+};
+
+exports.down = function(db, callback) {
+  db.dropTable('images', callback);
+};

project.clj

@@ -8,7 +8,9 @@
   :source-paths ["src/server" "src/client"]
   :npm { :dependencies [[ws "0.4.30"]
                         [imagemagick-native "https://github.com/elad/node-imagemagick-native.git"]
-                        [express "4.13.3"]]}
+                        [express "4.13.3"]
+                        [sqlite3 "3.1.1"]
+                        [db-migrate "0.9.23"]]}
   :cljsbuild {
               :builds [{:source-paths ["src/server"]
                         :compiler {