include nlohmann/json in inja directly

README.md

@@ -22,11 +22,11 @@ inja::render("Hello {{ name }}!", data); // Returns "Hello world!"
 
 ## Integration
 
-Inja is a headers only library, which can be downloaded from the [releases](https://github.com/pantor/inja/releases) or directly from the `src/` folder. Inja uses json by nlohmann as its single dependency, so make sure that it is included before inja. json can be found [here](https://github.com/nlohmann/json/releases).
+Inja is a headers only library, which can be downloaded from the [releases](https://github.com/pantor/inja/releases) or directly from the `src/` folder. Inja uses `nlohmann/json.hpp` as its single dependency, so make sure it can be included from `inja.hpp`. json can be downloaded [here](https://github.com/nlohmann/json/releases). Then integration is as easy as:
 
 ```c++
-#include "json.hpp"
-#include "inja.hpp"
+#include <inja.hpp>
+#include <nlohmann/json.hpp>
 
 // For convenience
 using namespace inja;

src/inja.hpp

@@ -33,16 +33,12 @@ SOFTWARE.
 #define PANTOR_INJA_VERSION_PATCH 1
 
 
-#ifndef NLOHMANN_JSON_HPP
-	static_assert(false, "nlohmann/json not found.");
-#endif
-
-
 #include <algorithm>
 #include <fstream>
 #include <iostream>
 #include <locale>
 #include <map>
+#include <nlohmann/json.hpp>
 #include <regex>
 #include <string>
 #include <sstream>

test/meson.build

@@ -4,8 +4,7 @@ unit_test = executable(
   'src/unit-files.cpp',
   'src/unit-renderer.cpp',
   'src/unit-string-helper.cpp',
-  dependencies: inja_dep,
-  include_directories: include_directories('thirdparty')
+  dependencies: inja_dep
 )
 
 test('Inja unit test', unit_test)

test/src/unit-files.cpp

@@ -1,6 +1,6 @@
 #include "catch/catch.hpp"
-#include "nlohmann/json.hpp"
 #include "inja.hpp"
+#include "nlohmann/json.hpp"
 
 
 using json = nlohmann::json;

test/src/unit-renderer.cpp

@@ -1,6 +1,6 @@
 #include "catch/catch.hpp"
-#include "nlohmann/json.hpp"
 #include "inja.hpp"
+#include "nlohmann/json.hpp"
 
 
 

test/src/unit-string-helper.cpp

@@ -1,6 +1,6 @@
 #include "catch/catch.hpp"
-#include "nlohmann/json.hpp"
 #include "inja.hpp"
+#include "nlohmann/json.hpp"