Add release script

scripts/release.sh

@@ -0,0 +1,26 @@
+files="BigInt.hpp \
+utils.hpp \
+constructors/constructors.hpp \
+operators/assignment.hpp \
+operators/relational.hpp \
+operators/unary_arithmetic.hpp \
+operators/io_stream.hpp"
+
+mkdir -p ../release
+rm -f ../release/BigInt.hpp
+
+for file in $files
+do
+  cat "../include/$file" >> ../release/BigInt.hpp
+  printf "\n\n" >> ../release/BigInt.hpp
+done
+
+patterns=("#ifndef *" \
+"#endif *" \
+"#define *" \
+"#include \"*\"")
+
+for pattern in "${patterns[@]}"
+do
+  sed -i "/$pattern/d" ../release/BigInt.hpp
+done