Improve incorrect readmes for examples

Signed-off-by: Luciano Nooijen <luciano@bytecode.nl>

Use relative instead of absolute path in Go error reporting

Signed-off-by: Luciano Nooijen <luciano@bytecode.nl>

Improve error reporting from the file extractor/Go parser

Signed-off-by: Luciano Nooijen <luciano@bytecode.nl>

Use own logging package for error handling in main

Signed-off-by: Luciano Nooijen <luciano@bytecode.nl>

Improve about in readme

Signed-off-by: Luciano Nooijen <luciano@bytecode.nl>

Use string builder for logs instead of writing to stdout

Signed-off-by: Luciano Nooijen <luciano@bytecode.nl>

Fix typo (boundry to boundary)

Signed-off-by: Luciano Nooijen <luciano@bytecode.nl>

Change git.bytecode.nl to github.com

Note: Not due to security issues

Signed-off-by: Luciano Nooijen <luciano@bytecode.nl>