build: use platform independent build tools

Fixes #5

package-lock.json

@@ -2020,6 +2020,36 @@
         "pinkie": "^2.0.0"
       }
     },
+    "prepend-file": {
+      "version": "1.3.1",
+      "resolved": "https://registry.npmjs.org/prepend-file/-/prepend-file-1.3.1.tgz",
+      "integrity": "sha1-g7FuC0rBkB/OiNvZRaIvTMgd9Xk=",
+      "dev": true,
+      "requires": {
+        "tmp": "0.0.31"
+      },
+      "dependencies": {
+        "tmp": {
+          "version": "0.0.31",
+          "resolved": "https://registry.npmjs.org/tmp/-/tmp-0.0.31.tgz",
+          "integrity": "sha1-jzirlDjhcxXl29izZX6L+yd65Kc=",
+          "dev": true,
+          "requires": {
+            "os-tmpdir": "~1.0.1"
+          }
+        }
+      }
+    },
+    "prepend-file-cli": {
+      "version": "1.0.6",
+      "resolved": "https://registry.npmjs.org/prepend-file-cli/-/prepend-file-cli-1.0.6.tgz",
+      "integrity": "sha1-/34RbJMU24XCLEOioH8/k4epp08=",
+      "dev": true,
+      "requires": {
+        "minimist": "^1.2.0",
+        "prepend-file": "1.3.1"
+      }
+    },
     "process": {
       "version": "0.5.2",
       "resolved": "https://registry.npmjs.org/process/-/process-0.5.2.tgz",

package.json

@@ -9,7 +9,7 @@
   "scripts": {
     "build": "npm run tslint && npm run compile && npm run documentation",
     "changelog": "conventional-changelog -p angular -i CHANGELOG.md -s -r 0",
-    "compile": "rm -rf lib/* && tsc --outDir lib && sed -i '1i#!/usr/bin/env node' lib/projectmanagement.cli.js && sed -i '1i#!/usr/bin/env node' lib/pack.cli.js",
+    "compile": "rimraf lib && tsc --outDir lib && prepend lib/projectmanagement.cli.js '#!/usr/bin/env node\n' && prepend lib/pack.cli.js '#!/usr/bin/env node\n'",
     "documentation": "typedoc --includeDeclarations --excludeExternals --mode modules --out docs src",
     "prepareOnly": "npm run build",
     "tslint": "tslint 'src/**/*.ts'"
@@ -48,6 +48,8 @@
   "devDependencies": {
     "@openstapps/configuration": "0.0.2",
     "conventional-changelog-cli": "2.0.11",
+    "prepend-file-cli": "1.0.6",
+    "rimraf": "2.6.2",
     "ts-node": "7.0.1",
     "tslint": "5.11.0",
     "typedoc": "0.13.0",