chore: upgrade to newer version of spawn-wrap (#592)

.travis.yml

@@ -5,9 +5,6 @@ node_js:
   - 4
   - "stable"
 
-before_script:
-  - "npm run prerelease"
-
 env:
   secure: "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"
 

package.json

@@ -13,7 +13,6 @@
     "test-integration": "tap -t120 --no-cov -b ./test/build/*.js && mocha --timeout=15000 ./test/nyc-bin.js",
     "test-mocha": "node ./bin/nyc --no-clean --silent --temp-directory=./.self_coverage mocha ./test/nyc.js ./test/process-args.js",
     "report": "node ./bin/nyc  --temp-directory ./.self_coverage/ -r text -r lcov report",
-    "prerelease": "cp node_modules/signal-exit/signals.js node_modules/spawn-wrap/node_modules/signal-exit/signals.js",
     "release": "standard-version"
   },
   "bin": {
@@ -97,7 +96,7 @@
     "resolve-from": "^2.0.0",
     "rimraf": "^2.5.4",
     "signal-exit": "^3.0.1",
-    "spawn-wrap": "1.2.4",
+    "spawn-wrap": "^1.3.6",
     "test-exclude": "^4.1.1",
     "yargs": "^8.0.1",
     "yargs-parser": "^5.0.0"