fix: move dirty-chai to dependencies (#52)

* fix: move dirty-chai to dependencies
* chore: test on node 10

License: MIT
Signed-off-by: Alan Shaw <alan.shaw@protocol.ai>

.travis.yml

@@ -1,7 +1,7 @@
 sudo: false
 language: node_js
 node_js:
-  - "stable"
+  - "10"
 
 before_install:
   - npm install -g npm

package.json

@@ -34,13 +34,13 @@
   },
   "homepage": "https://github.com/libp2p/interface-transport",
   "devDependencies": {
-    "aegir": "^18.2.2",
-    "dirty-chai": "^2.0.1"
+    "aegir": "^18.2.2"
   },
   "dependencies": {
     "abort-controller": "^3.0.0",
     "async-iterator-to-pull-stream": "^1.3.0",
     "chai": "^4.2.0",
+    "dirty-chai": "^2.0.1",
     "interface-connection": "~0.3.3",
     "it-goodbye": "^2.0.0",
     "it-pipe": "^1.0.0",