Use nyc instead, send to coveralls

.gitignore

@@ -13,6 +13,7 @@ lib-cov
 
 # Coverage directory used by tools like istanbul
 coverage
+.nyc_output
 
 # node-waf configuration
 .lock-wscript

circle.yml

@@ -1,3 +1,3 @@
 test:
   override:
-    - npm run test-verbose
+    - npm run test-ci

package.json

@@ -7,7 +7,7 @@
   },
   "scripts": {
     "test": "tape test/**/*.js | tap-spec",
-    "test-verbose": "istanbul cover tape -- test/**/*.js",
+    "test-ci": "nyc tape test/**/*.js && nyc report --reporter=text-lcov | coveralls",
     "tdd": "nodemon -x npm test"
   },
   "repository": {
@@ -35,9 +35,10 @@
   "homepage": "https://github.com/ben-ng/gaggle#readme",
   "devDependencies": {
     "async": "^1.5.2",
-    "istanbul": "^0.4.2",
+    "coveralls": "^2.11.6",
     "joi": "^6.6.1",
     "nodemon": "^1.4.1",
+    "nyc": "^5.3.0",
     "once": "^1.3.3",
     "tap-spec": "^4.1.1",
     "tape": "^4.2.0"