fix: ipfs-repo is not a devDependency

package.json

@@ -70,6 +70,7 @@
     "hapi": "^16.6.2",
     "hat": "0.0.3",
     "ipfs-api": "^17.2.5",
+    "ipfs-repo": "^0.18.5",
     "joi": "^13.0.2",
     "lodash.clone": "^4.5.0",
     "lodash.defaultsdeep": "^4.6.0",
@@ -91,7 +92,6 @@
     "dirty-chai": "^2.0.1",
     "go-ipfs-dep": "0.4.13",
     "ipfs": "^0.27.5",
-    "ipfs-repo": "^0.18.5",
     "is-running": "1.0.5",
     "mkdirp": "^0.5.1",
     "pre-commit": "^1.2.2",

src/daemon-ctrl.js

@@ -81,7 +81,8 @@ class DaemonController {
    * - `disposable` bool - a new repo is created and initialized for each invocation
    * - `config` - ipfs configuration options
    * - `args` - array of cmd line arguments to be passed to ipfs daemon
-   * - `exec` - path to the desired IPFS executable to spawn
+   * - `exec` string (optional) - path to the desired IPFS executable to spawn,
+   * this will override the `exec` set when creating the daemon controller factory instance
    *
    * @param {Object} [opts={}] - various config options and ipfs config parameters
    * @param {Function} callback(err, [`ipfs-api instance`, `Node (ctrl) instance`]) - a callback that receives an array with an `ipfs-instance` attached to the node and a `Node`