began mac compilation instructions
Fix the return value so that the tests will compiled on stricter C

The error was:
src/positioned-update-test.c:70:6: error: non-void function 'main' should return a value [-Wreturn-type]
README.txt -> README.md
Started the main README
Added a newline in the README
More updates to README
Added a message about running the tests if the .libs error pops up
Change the default port for the server from 5432 to 15432
run_tests.sh: script to quickly compile and run tests on unix-like
Removed make clean from the testing script
Created COPYING from the old readme, moved license to LICENSE
Fixed COPYING (initially used wget on the wrong URL to grab the old readme)
Update Makefile.am to distribute the renamed LICENSE, COPYING, READMEs, etc.
Merge pull request #1 from louisrli/master

Update documentation and testing configuration