Enforce Consistent Spacing with ESLint's space-before-blocks and keyword-spacing Rules (#1308)

* added rule no-trailing-spaces

* added rule space-before-block

* added rule keyword spacing

.eslintrc

@@ -26,7 +26,9 @@
         "no-trailing-spaces": ["error", { // Disallows trailing whitespace at the end of lines
           "skipBlankLines": false, // Enforces the rule even on blank lines
           "ignoreComments": false // Enforces the rule on lines containing comments
-        }]
+        }],
+        "space-before-blocks": ["error", "always"], // Enforces a space before blocks
+        "keyword-spacing": ["error", { "before": true, "after": true }] // Enforces spacing before and after keywords
       }
     }
   ]