recreating *.rda in data_create.R to try to remove warnings during install_github()
```
** preparing package for lazy loading
Warning in FUN(X[[1L]], ...) :
  Created a package name, '2014-06-10 23:48:29', when none found
```
removed methods from Conf, Layers import b/c get error during R package check on ohicore, but leaving in WriteScenario():

```
* checking package dependencies ... ERROR
Namespace dependency not required: ‘methods’
```
Merge pull request #142 from bbest/master

fixing warnings on install