README.md: Mention including and pkg-config.

README.md

@@ -1,2 +1,41 @@
 # murrayc-tuple-utils
 A rough collection of code to manipulate C++ std::tuple<>s.
+
+## Basic Usage
+
+Include the specific header. For instance,
+```C++
+#include <tuple-utils/tuple_end.h>
+```
+
+If your source file is program.cc, you can compile it with:
+```shell
+g++ program.cc -o program `pkg-config --cflags --libs murrayc-tuple-utils-1.0`
+```
+
+## Using Autotools
+
+Alternatively, if using autoconf, use the following in configure.ac:
+```m4
+PKG_CHECK_MODULES([DEPS], [murrayc-tuple-utils-1.0])
+```
+
+Then use the generated DEPS_CFLAGS and DEPS_LIBS variables in the project Makefile.am files. For example:
+```Makefile
+yourprogram_CPPFLAGS = $(DEPS_CFLAGS)
+yourprogram_LDADD = $(DEPS_LIBS)
+```
+
+Your PKG_CHECK_MODULES() call should also mention any other libraries that you need to use via pkg-config.
+
+## Using CMake
+
+If using CMake, use the following in CMakeList.txt:
+```CMake
+include(FindPkgConfig)
+pkg_check_modules(DEPS REQUIRED murrayc-tuple-utils-1.0)
+include_directories(${DEPS_INCLUDE_DIRS})
+target_link_libraries(yourprogram ${DEPS_LIBRARIES})
+```
+
+Your pkg_check_modules() call should also mention any other libraries that you need to use via pkg-config