Simplify README.md.

Author: ielis

README.md

@@ -1,16 +1,3 @@
 # Oboannotation
 
 Access annotations of biomedical ontologies.
-
-## Test drive
-
-The following command parses a GOA file and prints out brief statistics.
-
-```shell
-cargo run --bin demo -- --goa /../../goa_human.gaf.gz 
-```
-This should show something like this
-```shell
-processing /Users/robin/data/go/goa_human.gaf.gz
-...
-```