Consider default C++ compiler in Makefile, defaulting to g++.

Makefile

@@ -1,16 +1,19 @@
+# Check if a default C++ compiler exists, otherwise use g++
+CXX ?= g++
+
 all: examples test-cpp11 test-cpp14 test-cpp20
 examples: examples/main.cpp
 	mkdir -p build
-	g++ examples/main.cpp -Iinclude -o build/examples -std=c++11 -pthread -latomic
+	$(CXX) examples/main.cpp -Iinclude -o build/examples -std=c++11 -pthread -latomic
 test: test-cpp11
 test-cpp11: test/test.cpp
 	mkdir -p build
-	g++ test/test.cpp -Iinclude -Itest -o build/test -std=c++11 -pthread -latomic
+	$(CXX) test/test.cpp -Iinclude -Itest -o build/test -std=c++11 -pthread -latomic
 test-cpp14: test/test.cpp
 	mkdir -p build
-	g++ test/test.cpp -Iinclude -Itest -o build/test-cpp14 -std=c++14 -pthread -latomic
+	$(CXX) test/test.cpp -Iinclude -Itest -o build/test-cpp14 -std=c++14 -pthread -latomic
 test-cpp20: test/test.cpp
 	mkdir -p build
-	g++ test/test.cpp -Iinclude -Itest -o build/test-cpp20 -std=c++2a -pthread -latomic
+	$(CXX) test/test.cpp -Iinclude -Itest -o build/test-cpp20 -std=c++2a -pthread -latomic
 clean:
 	rm -rf build

README.md

@@ -400,7 +400,7 @@ Debug logging for requests and replies to the server can easily be turned on and
 ```C++
 ollama::show_requests(true);
 ollama::show_replies(true);
-  ```
+```
 
 ### Manual Requests
 For those looking for greater control of the requests sent to the ollama server, manual requests can be created through the `ollama::request` class. This class extends `nlohmann::json` and can be treated as a standard JSON object.