<commit_before># perennial
Maintenance tools that won't change with different versions of chipper checked out

### Tasks
1. checkout-shas
2. checkout-master

### Examples

```bash
cd perennial
grunt checkout-shas --repo=molecules-and-light
```

### Documentation
The [PhET Development Overview](http://bit.ly/phet-development-overview) is the most complete guide to PhET Simulation Development. This guide includes how
to obtain simulation code and its dependencies, notes about architecture & design, how to test and build the sims, as well as other important information.

### License
See the [license](LICENSE).<commit_msg>Updated built READMEs to point to new dev overview. phetsims/special-ops#46<commit_after># perennial
Maintenance tools that won't change with different versions of chipper checked out

### Tasks
1. checkout-shas
2. checkout-master

### Examples

```bash
cd perennial
grunt checkout-shas --repo=molecules-and-light
```

### Documentation
The [PhET Development Overview](http://bit.ly/phet-html5-development-overview) is the most complete guide to PhET Simulation Development. This guide includes how
to obtain simulation code and its dependencies, notes about architecture & design, how to test and build the sims, as well as other important information.

### License
See the [license](LICENSE).
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