Include LICENSE file in distribution

Signed-off-by: Stefan Weil <sw@weilnetz.de>

Author: stweil

Makefile.am

@@ -22,7 +22,7 @@ SUBDIRS = src/arch src/ccutil src/viewer src/cutil src/opencl src/ccstruct
 SUBDIRS += src/dict src/classify src/wordrec src/textord src/lstm
 SUBDIRS += src/ccmain src/api . tessdata doc unittest
 
-EXTRA_DIST = README.md
+EXTRA_DIST = README.md LICENSE
 EXTRA_DIST += aclocal.m4 config configure.ac autogen.sh
 EXTRA_DIST += tesseract.pc.in $(TRAINING_SUBDIR) java doc langtests unlvtests
 EXTRA_DIST += CMakeLists.txt tesseract.pc.cmake cmake VERSION src/vs2010 cppan.yml