[IMP] README.md: Codecov flag
[IMP] README.md: Codecov flag
syci/l10n-spain,JuanjoA/l10n-spain,agaldona/l10n-spain,diagramsoftware/l10n-spain,RamonGuiuGou/l10n-spain,JuanjoA/l10n-spain,algiopensource/l10n-spain,Comunitea/l10n-spain,algiopensource/l10n-spain,syci/l10n-spain,Comunitea/l10n-spain,Endika/l10n-spain,diagramsoftware/l10n-spain,agaldona/l10n-spain,RamonGuiuGou/l10n-spain,Comunitea/l10n-spain,Endika/l10n-spain