Update README.md

Author: hasherezade

README.md

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 # libPeConv project template
 [![Build status](https://ci.appveyor.com/api/projects/status/ehmf01f38h5ce8ri?svg=true)](https://ci.appveyor.com/project/hasherezade/libpeconv-tpl)
+[![Last Commit](https://img.shields.io/github/last-commit/hasherezade/libpeconv_tpl/master)](https://github.com/hasherezade/libpeconv_tpl/commits)
 
 A ready-made template for a project based on [libpeconv](https://github.com/hasherezade/libpeconv).