Grunt will simply not install on my Win 8.1 machine - gruntjs

Question

I made a folder g in root(C:/) in where I try to install Grunt via npm.
I sucessfull made: npm install -g grunt-cli.
I configured package.json to this:
{
"name": "testing",
"version": "0.0.0",
"dependencies": {
"grunt": "~0.4.5" },
"description": "testing",
"main": "index.html",
"scripts": {
"test": "echo \"Error: no test specified\" && exit 1"
},
"author": "",
"license": "ISC",
"devDependencies": {
"grunt": "^0.4.5"
}
}
So good so far.
BUT: When I try to install Grunt: npm install grunt --save-dev and modules(plugins) then I run into this error: npm WARN package.json testing#0.0.0 No repository field...
I use GitHub where I've forked Grunt and Grunticon.
Then I can't succed with nothing towards installing Grunt...
Any good clues and help in solving this?

Answer 1

Okay, I think I see the problem clearly now. Here are some instructions for getting Grunt running, try to follow these exactly, do not create any other folders as it could cause issues for Grunt or Node.
Create a folder for your project, this can be anywhere on your system.
Save the file you have above as package.json in that folder.
Now install the global Grunt CLI
~$ npm install -g grunt-cli <-- Note this is "grunt-cli" NOT "grunt"
Then go to the new directory you created and run this command:
~/new-directoty$ npm install
This will install the Grunt runtime locally for your project because it is specified in package.json
Create a very simple config file in the new directory and name it Gruntfile.js:
module.exports = function(grunt) {
grunt.initConfig({ /* your config will go in here */ });
/* multi-task definitions go here */
};
Now try to run Grunt just to test that it works:
~/new-directory$ grunt
After that you are ready to start adding plugins, but that's a bigger topic. Good luck.