closes #42 validate projectName 👍

Minor refactor

Author: jamesgeorge007

package.json

@@ -100,6 +100,7 @@
     "elegant-spinner": "^1.0.1",
     "log-update": "^2.3.0",
     "shelljs": "^0.8.2",
+    "validate-npm-package-name": "^3.0.0",
     "writefile": "^0.2.8"
   },
   "devDependencies": {

src/commands/main-init.js

@@ -3,6 +3,7 @@ import chalk from 'chalk';
 import elegantSpinner from 'elegant-spinner';
 import logUpdate from 'log-update';
 import variants from '../../variants.json';
+import validate from 'validate-npm-package-name';
 
 require('shelljs/global');
 
@@ -23,6 +24,16 @@ if (program.args.length > 1) {
     exit(1);
 }
 
+const validationResult = validate(program.args[0]);
+if (!validationResult.validForNewPackages) {
+    console.error(
+      `Could not create a project called ${chalk.red(
+        `"${program.args[0]}"`
+    )} because of npm naming restrictions:`
+    );
+    exit(1);
+} 
+
 if (program.args.length === 1) {
     if (test('-d', program.args[0])) {
         console.log(chalk.red(`${program.args[0]} directory already exits! Please choose some another name!!!`));