fix incompatible in requirement

Signed-off-by: JoeyHwong <joeyhwong@gknow.cn>

lib/requirements.txt

@@ -1,7 +1,7 @@
 numpy>=1.13.3  # BSD
 colorlog~=4.7.2  # MIT
 websockets~=9.1  # BSD
-requests==2.24.0  # Apache-2.0
+requests>=2.24.0  # Apache-2.0
 PyYAML~=5.4.1  # MIT
 setuptools~=54.2.0
 fastapi~=0.68.1  # MIT

lib/sedna/README.md

@@ -29,6 +29,10 @@ pip install dist/sedna*.whl
 Install via Setuptools
 
 ```bash
+# Install dependence
+pip install -r requirements.txt
+
+# Install sedna
 python setup.py install --user
 ```
 

lib/sedna/__version__.py

@@ -13,7 +13,11 @@
 # limitations under the License.
 
 """sedna version information."""
+import os
 
-with open("./VERSION", "r", encoding="utf-8") as fin:
+
+_VERSION = os.path.join(os.path.dirname(__file__), "VERSION")
+
+with open(_VERSION, "r", encoding="utf-8") as fin:
     tmp = [line.strip() for line in fin if line.strip()]
     __version__ = "-".join(tmp) if tmp else "dev"