Fix typos in README.md/CHANGES.txt

cmake/README.md

diff --git a/cmake/README.md b/cmake/README.md
index b3042e6..58aae8e 100644
--- a/cmake/README.md
+++ b/cmake/README.md
@@ -28,11 +28,11 @@
 
     C:\Path\to>mkdir install
 
-If *cmake* command is not avaliable from *Command Prompt*, add it to system *PATH* variable:
+If *cmake* command is not available from *Command Prompt*, add it to system *PATH* variable:
 
     C:\Path\to>set PATH=%PATH%;C:\Program Files (x86)\CMake\bin
 
-If *git* command is not avaliable from *Command Prompt*, add it to system *PATH* variable:
+If *git* command is not available from *Command Prompt*, add it to system *PATH* variable:
 
     C:\Path\to>set PATH=%PATH%;C:\Program Files\Git\cmd
 
@@ -218,7 +218,7 @@
 
 This will create the following folders under the *install* location:
   * bin - that contains protobuf *protoc.exe* compiler;
-  * inclue - that contains C++ headers and protobuf *.proto files;
+  * include - that contains C++ headers and protobuf *.proto files;
   * lib - that contains linking libraries and *CMake* configuration files for *protobuf* package.
 
 Now you can if needed: