(#5) Removed postinstall step and added separate ci step to build scripts.

Trying to avoid loops on CI

Author: s1hofmann

Diff for: .build/build.sh

@@ -25,5 +25,7 @@ echo "npm ci"
 npm ci
 echo "npm run compile"
 npm run compile
+echo "init e2e test subpackage"
+npm --prefix e2e/tests ci
 echo "npm run coverage"
 E2E_TEST=1 npm run coverage

Diff for: .build/run_osx.sh

@@ -5,4 +5,5 @@ echo $PWD
 
 npm ci
 npm run compile
+npm --prefix e2e/tests ci
 npm test

Diff for: appveyor.yml

@@ -23,6 +23,7 @@ install:
   - cd c:\projects\nut
   - npm ci
   - npm run compile
+  - npm --prefix e2e/tests ci
 
 build: off
 

Diff for: package.json

@@ -46,7 +46,6 @@
   "scripts": {
     "clean": "rm -rf dist",
     "compile": "npm run clean && tsc -p .",
-    "postinstall": "npm --prefix e2e/tests i",
     "test": "jest --runInBand",
     "test:e2e": "npm --prefix e2e/tests cit",
     "coverage": "jest --coverage --runInBand",