Create stata.toc

This should allow installation directly from github without git.
Update README.md
Integrate earlier changes

Put in the global-export and ado-matalib changes from earlier.
Revert "Integrate earlier changes"

This reverts commit 0dff61ee03f3063e23759af40f0b4b6bd26c6667.
Include the previous changes

Include the ado-matalibs and global-export changes.
Done
Merge branch 'bquistorff-master'