docs: minor updates to lambdas descriptions, update schema for generator property

Author: MikeRalphson

docs/README.md

@@ -36,29 +36,28 @@
 
 ### Predefined lambdas
 
-Lambdas are special tags which invoke a predefined function named after tag.
-The function would receive the template fragement between the tag. More info
-about lambdas could be found [here](https://github.com/OpenAPITools/openapi-generator/blob/master/docs/templating.md#mustache-lambdas)
+Lambdas are special tags which invoke a predefined function named after the tag.
+The function receives the template fragment between the tags. More info
+about lambdas can be found [here](https://github.com/OpenAPITools/openapi-generator/blob/master/docs/templating.md#mustache-lambdas)
 
-We support following lambdas at the moment
+We support the following pre-defined lambdas at the moment:
 
 | lambda     | example                                | description           |
 |------------|----------------------------------------|-----------------------|
 | lowercase  | {{#lowercase}}{{name}}{{/lowercase}}   | Convert to lowercase  |
 | uppercase  | {{#uppercase}}{{name}}{{/uppercase}}   | Convert to UPPERCASE  |
-| snakecase  | {{#snakecase}}{{name}}{{/snacecase}}   | Convert to snake_case |
+| snakecase  | {{#snakecase}}{{name}}{{/snakecase}}   | Convert to snake_case |
 | pascalcase | {{#pascalcase}}{{name}}{{/pascalcase}} | Convert to PascalCase |
 | camelcase  | {{#camelcase}}{{name}}{{/camelcase}}   | Convert to camelCase  |
 | kebabcase  | {{#kebabcase}}{{name}}{{/kebabcase}}   | Convert to kebab-case |
 
 ### Custom generators
 
-Some languages have various reserved words or weird way of arguments formating.
+Some languages have various reserved words or unusual way of formatting arguments.
 Sometimes custom lambdas are needed to solve the issues.
-This means there should be a way to customize the codegeration. Custom generator
-is a javascript module defined as:
+A custom generator is simply a javascript module, for example:
 
-```
+```js
 const Hogan = require('hogan.js');
 
 const RESERVED_WORDS = new Set([
@@ -77,7 +76,7 @@ function hello_lambda() {
     return function(text) {
       return 'Hello ' + Hogan.compile(text).render(this);
     }
-};
+}
 
 function complex_lambda() {
     return function(template) {
@@ -102,11 +101,11 @@ module.exports = {
         hello: hello_lambda,
         path_template: complex_lambda
     }
-}
+};
 ```
 
-The module has to be configured in config under `generator` property. Here is an example:
-```
+The module has to be configured in your config under the `generator` property. Here is an example:
+```json
 {
     "defaults": {
         "modelNaming": "snake_case",
@@ -122,5 +121,5 @@ The module has to be configured in config under `generator` property. Here is an
     "perModel": [
     ]
 }
+```
 
-```

schemas/config.json

@@ -18,6 +18,10 @@
             "type": "boolean",
             "description": "Whether to include the Apache-2.0 license instead of the Unlicense"
         },
+        "generator": {
+            "type": "string",
+            "description": "Custom JS function defining additional lambdas"
+        },
         "directories": {
             "type": "array",
             "description": "list of directories to create in output directory",