Added a simple README for now.

README.md

+Requirements:
+- antlr
+- corpus2
+
+Build:
+$ mkdir build
+$ cd build
+$ cmake ..
+$ make -j 4
+$ make install
+$ ldconfig
+
+Prepare *.deb packages:
+$ mkdir build
+$ cd build
+$ cmake ..
+$ cmake --build .
+$ cpack