README and INSTALL files redefined to better fit their purposes. Beginning to...

README and INSTALL files redefined to better fit their purposes. Beginning to merge api file with module file - justification: Due to differring coding standards and other factors separate versions of the plugin have to be maintained and any changes will likely be accompanied by an updae to the plugin anyway. The envolve javascript is a stable, versioned release that will be maintained for a long time and remain at the same URL