Initial debian/ubuntu installer:

- Used grunt-packager and grunt-electron-installer-debian

- Added debian/ubuntu ai32 arch support

- Added Redhat/Centos/Fedora rpm support

- Added electron-packager to MacOSX custom task

- Fixed OSX Linux build and better conditional legibility

- Fixed ESLint indications

Signed-off-by: Albert Domenech <adomenech@gmail.com>

package.json

@@ -70,6 +70,9 @@
     "grunt-download-electron": "^2.1.1",
     "grunt-electron": "^2.0.0",
     "grunt-electron-installer": "^1.0.4",
+    "grunt-electron-installer-debian": "^0.3.0",
+    "grunt-electron-installer-redhat": "^0.3.0",
+    "grunt-electron-packager": "0.0.7",
     "grunt-if-missing": "^1.0.0",
     "grunt-newer": "^1.1.1",
     "grunt-plistbuddy": "^0.1.1",