radu/LaTeX-examples: More than 570 examples for the usage of LaTeX. @ c27720ae7831fd8f43bec3d4a78196a2dbd72d5b

Martin Thoma 2f86de0928 added letter example and vertex cover example		13 lat temu
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Makefile	2f86de0928 added letter example and vertex cover example	13 lat temu
vertex-cover-1.tex	2f86de0928 added letter example and vertex cover example	13 lat temu