Create README.md

git-svn-id: https://svn.lliurex.net/lliurex-extra/proves@4258 4b03a0f8-f53a-0410-a33f-a653b8c3e806
Added fich3

git-svn-id: https://svn.lliurex.net/lliurex-extra/proves@4259 4b03a0f8-f53a-0410-a33f-a653b8c3e806
Added fich4

git-svn-id: https://svn.lliurex.net/lliurex-extra/proves@4260 4b03a0f8-f53a-0410-a33f-a653b8c3e806
Merge branch 'master' of https://github.com/jcgm/proves