Update README.md (#44)

Please enable the thread feature when it's necessary.
the optiona must be applied with this change:
thorvg/thorvg#1911

README.md

@@ -10,7 +10,7 @@ git clone git@github.com:thorvg/thorvg.git
 ### 2. Build and install
 
 ```bash
-meson . builddir -Dbindings=capi -Dloaders="lottie, png, jpg"
+meson . builddir -Dbindings=capi -Dloaders="lottie, png, jpg" -Dthreads=false
 ninja -C builddir install
 ```
 
@@ -45,4 +45,4 @@ It will then build the project, you should have access to the C Api methods.
 
 # Important remarks
 
-The Thorvg C api is different than the C++ api. The header files are also outdated and doesn't every feature of the library mapped out, this include Lottie support.
+The Thorvg C api is different than the C++ api. The header files are also outdated and doesn't every feature of the library mapped out, this include Lottie support.